{
  "id": "LB-en-a-article-029",
  "slug": "a-indefinite-article",
  "title": {
    "en": "A / AN · Indefinite Article",
    "zh-Hans": "A / AN · Indefinite Article"
  },
  "languages": [
    {
      "role": "source",
      "code": "en",
      "name": "English",
      "word": "a",
      "pronunciation": "not recorded",
      "part_of_speech": "indefinite article · 不定冠词"
    },
    {
      "role": "standard-translation",
      "code": "zh-Hans",
      "name": "Chinese",
      "word": "一个／一",
      "pronunciation": "yí ge / yī"
    }
  ],
  "primary_mapping": {
    "mapping_id": "MAP-a-indefinite-article-primary",
    "source": {
      "language": "English",
      "word": "a",
      "pronunciation": "a /ə, eɪ/; an /ən, æn/"
    },
    "target": {
      "language": "Chinese",
      "word": "不定冠词；依语境译“一＋量词”或不显译",
      "pronunciation": "Not applicable: grammatical function / construction, not a single Chinese word"
    },
    "gloss": {
      "en": "the indefinite article used before a nonspecific singular count noun",
      "zh-Hans": "用于非特指单数可数名词前的不定冠词"
    },
    "meaning": {
      "en": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。",
      "zh-Hans": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。"
    },
    "mapping_type": "Grammatical function; contextual translation, not lexical equivalence",
    "rationale": {
      "en": "Numeral, classifier and indefiniteness remain separate. a teacher → 老师：可以不出现“一”。 三个人 / 这个人都有量词“个”，不能推出“个”等于a。 Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。",
      "zh-Hans": "Numeral, classifier and indefiniteness remain separate. a teacher → 老师：可以不出现“一”。 三个人 / 这个人都有量词“个”，不能推出“个”等于a。 Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
    }
  },
  "entry_status": "Reviewed",
  "mapping_status": "Reviewed",
  "mapping_level": "Unrated",
  "historical_relation_status": "Not claimed",
  "evidence": {
    "Historical": {
      "status": "Established",
      "confidence": "High",
      "summary": {
        "en": "English a is the reduced form of an, historically from Old English ān ‘one’. This Germanic history does not establish a relation to Chinese 甲 or Cantonese forms.",
        "zh-Hans": "英语 a 是 an 的弱化形式，历史上来自古英语 ān“一”；该日耳曼词史不建立它与汉字“甲”或粤语形式的关系。"
      },
      "items": [
        {
          "evidence_id": "HIST-A-INDEFINITE-ARTICLE-001",
          "claim": {
            "en": "English a is the reduced form of an, historically from Old English ān ‘one’. This Germanic history does not establish a relation to Chinese 甲 or Cantonese forms.",
            "zh-Hans": "英语 a 是 an 的弱化形式，历史上来自古英语 ān“一”；该日耳曼词史不建立它与汉字“甲”或粤语形式的关系。"
          },
          "status": "Established",
          "confidence": "High",
          "source_refs": [
            "REF-MW-A"
          ]
        }
      ],
      "source_refs": [
        "REF-MW-A"
      ]
    },
    "Phonetic-Semantic": {
      "status": "Rejected",
      "confidence": "Low",
      "summary": {
        "en": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending.",
        "zh-Hans": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending."
      },
      "items": [
        {
          "evidence_id": "PHONSEM-A-INDEFINITE-ARTICLE-001",
          "claim": {
            "en": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending.",
            "zh-Hans": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending."
          },
          "status": "Rejected",
          "confidence": "Low",
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        }
      ],
      "source_refs": [
        "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
        "REF-MW-A"
      ]
    },
    "Cognitive": {
      "status": "Interpretive",
      "confidence": "Medium",
      "summary": {
        "en": "ONE → AN INDEFINITE SINGLE MEMBER explains the grammatical development from numeral to article.",
        "zh-Hans": "ONE → 一个非特指单体，解释了数词向冠词的语法发展。"
      },
      "items": [
        {
          "evidence_id": "COG-A-INDEFINITE-ARTICLE-001",
          "claim": {
            "en": "ONE → AN INDEFINITE SINGLE MEMBER explains the grammatical development from numeral to article.",
            "zh-Hans": "ONE → 一个非特指单体，解释了数词向冠词的语法发展。"
          },
          "status": "Interpretive",
          "confidence": "Medium",
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE"
          ]
        }
      ],
      "source_refs": [
        "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE"
      ]
    },
    "Speculative": {
      "status": "Unestablished",
      "confidence": "High",
      "summary": {
        "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
        "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
      },
      "items": [
        {
          "evidence_id": "SPEC-A-INDEFINITE-ARTICLE-001",
          "claim": {
            "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
            "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
          },
          "status": "Unestablished",
          "confidence": "High",
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        }
      ],
      "source_refs": [
        "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
        "REF-MW-A"
      ]
    }
  },
  "phonetic_observation": [
    {
      "observation_id": "PHON-A-INDEFINITE-ARTICLE-001",
      "claim": {
        "en": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending.",
        "zh-Hans": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending."
      },
      "status": "Rejected / Raw Research",
      "limitations": {
        "en": "Surface resemblance is not a regular cross-language sound correspondence and does not prove cognacy.",
        "zh-Hans": "表面音近不是规律跨语言音变，也不能证明同源。"
      }
    }
  ],
  "semantic_structure": {
    "concepts": [
      "NUMERAL ONE",
      "CLASSIFIER",
      "INDEFINITENESS"
    ],
    "relation": "Grammatical/structural comparison; not lexical equivalence",
    "status": "Reviewed comparison; Featured Pending"
  },
  "related_words": [
    {
      "word": "an",
      "language": "English",
      "relationship_type": "historical allomorph",
      "family": "Old English ān",
      "relation_to_entry": {
        "en": "Documented relation in the stated historical family.",
        "zh-Hans": "在所列历史词族内有文献支持的关系。"
      },
      "status": "Established",
      "source_refs": [
        "REF-MW-A"
      ]
    },
    {
      "word": "one",
      "language": "English",
      "relationship_type": "historical family",
      "family": "Old English ān",
      "relation_to_entry": {
        "en": "Documented relation in the stated historical family.",
        "zh-Hans": "在所列历史词族内有文献支持的关系。"
      },
      "status": "Established",
      "source_refs": [
        "REF-MW-A"
      ]
    },
    {
      "word": "甲 gaap3",
      "language": "Cantonese/Chinese",
      "relationship_type": "Rejected author comparison; retained provenance",
      "family": "independent Sinitic history",
      "relation_to_entry": {
        "en": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending.",
        "zh-Hans": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending."
      },
      "status": "Rejected / Raw Research",
      "source_refs": [
        "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
        "REF-MW-A"
      ]
    }
  ],
  "semantic_associations": [
    {
      "association_id": "ASSOC-A-INDEFINITE-ARTICLE-001",
      "relation": "ONE → AN INDEFINITE SINGLE MEMBER explains the grammatical development from numeral to article.",
      "status": "Interpretive",
      "is_etymological": false
    }
  ],
  "hypotheses": [
    {
      "hypothesis_id": "UNI-LEGACY-A-INDEFINITE-ARTICLE-001",
      "type": "Original Author Hypothesis / legacy phonetic-semantic observation",
      "claim": {
        "en": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending.",
        "zh-Hans": "Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending."
      },
      "status": "Rejected / Raw Research",
      "confidence": "Low",
      "supporting_cases": [
        "a",
        "一个／一"
      ],
      "counterexamples": [
        "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
        "No regular cross-language sound correspondence has been demonstrated."
      ],
      "testability": {
        "en": "Test phonetic similarity and semantic fit separately with blinded controls and independent historical review.",
        "zh-Hans": "以盲法对照和独立词源核验分别测试声音相似度与语义适配。"
      },
      "experiment_link": null,
      "source_refs": [
        "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
        "REF-MW-A"
      ]
    }
  ],
  "counterevidence": [
    {
      "counterevidence_id": "COUNTER-A-INDEFINITE-ARTICLE-001",
      "statement": {
        "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
        "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
      },
      "confidence": "High",
      "source_refs": [
        "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
        "REF-MW-A"
      ]
    },
    "a teacher → 老师：可以不出现“一”。",
    "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
    "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
  ],
  "experiments": [],
  "literary_layer": {
    "status": "Preserved from legacy note",
    "is_historical_evidence": false,
    "proposition": {
      "en": "ONE → AN INDEFINITE SINGLE MEMBER explains the grammatical development from numeral to article.",
      "zh-Hans": "ONE → 一个非特指单体，解释了数词向冠词的语法发展。"
    },
    "essay_prose": [],
    "poem_lyrics": [],
    "translations": [],
    "archival_manuscript_media": [],
    "evidence_boundary": {
      "en": "The legacy image may be developed as literature or mnemonic, but it is not historical evidence.",
      "zh-Hans": "旧站意象可作为文学或记忆法展开，但不是历史证据。"
    }
  },
  "media": [],
  "references": [
    {
      "reference_id": "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
      "title": "languagesbook.com legacy entry: a，甲 jia。粤语一为甲与英语类似",
      "type": "legacy author publication",
      "url": "https://languagesbook.com/glossary/a%ef%bc%8c%e4%b8%80%e4%b8%aa%e3%80%82%e7%94%b2jia%e3%80%82%e7%b2%a4%e8%af%ad%e4%b8%80%e4%b8%ba%e7%94%b2%e4%b8%8e%e8%8b%b1%e8%aa%9e%e7%b1%bb%e4%bc%bc/",
      "path": null,
      "provenance": "author-published legacy website; imported 2026-09-01; original observation preserved independently from evaluation"
    },
    {
      "reference_id": "REF-MW-A",
      "title": "Merriam-Webster Dictionary: a",
      "type": "dictionary",
      "url": "https://www.merriam-webster.com/dictionary/a",
      "path": null,
      "provenance": "external lexicographic reference; accessed 2026-09-01"
    },
    {
      "reference_id": "TCA-E1",
      "title": "Merriam-Webster a, indefinite article section",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.merriam-webster.com/dictionary/a",
      "path": null,
      "provenance": "Direct dictionary entry; homonyms excluded"
    },
    {
      "reference_id": "TCA-E2",
      "title": "American Heritage an¹, Word History",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.ahdictionary.com/word/search.html?q=an",
      "path": null,
      "provenance": "Direct dictionary account; precise first attestation not established"
    },
    {
      "reference_id": "TCA-E3",
      "title": "Oxford a/an pronunciation and usage",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.oxfordlearnersdictionaries.com/definition/english/a_1",
      "path": null,
      "provenance": "Direct modern IPA and usage"
    },
    {
      "reference_id": "TCA-C1",
      "title": "汉典 一：基本/详细解释及音韵方言",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.zdic.net/hans/一",
      "path": null,
      "provenance": "Online entry; not a verified Mainland print edition"
    },
    {
      "reference_id": "TCA-C2",
      "title": "汉典 个：gè量词义",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.zdic.net/hans/个",
      "path": null,
      "provenance": "Online entry and mediated old quotations; print original Pending"
    },
    {
      "reference_id": "TCA-C3",
      "title": "汉典 甲：义项及广东话gaap3",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.zdic.net/hans/甲",
      "path": null,
      "provenance": "Online reading; exact Mainland dialect dictionary page Pending"
    },
    {
      "reference_id": "TCA-C4",
      "title": "汉典 某：mǒu代词义",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.zdic.net/hans/某",
      "path": null,
      "provenance": "Online basic/detailed section only"
    },
    {
      "reference_id": "TCA-C5",
      "title": "汉典 啊：a语气助词义",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.zdic.net/hans/啊",
      "path": null,
      "provenance": "Online detailed section only"
    },
    {
      "reference_id": "TCA-C6",
      "title": "汉典 安：ān安定义",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.zdic.net/hans/安",
      "path": null,
      "provenance": "Online basic/detailed section only"
    },
    {
      "reference_id": "TCA-P1",
      "title": "王珲、吴义诚《数词与定指：以数词“一”为例》，外国语文2024(3):55–64",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://xb.sisu.edu.cn/docs/2024-06/74381e9491924e30ac9292d454d896d3.pdf",
      "path": null,
      "provenance": "Publisher indexed first page/abstract read; direct full PDF retriever timed out. Author argument, not universal consensus."
    },
    {
      "reference_id": "TCA-P2",
      "title": "Indefinite determiner introducing definite referent: a special use of yi one + classifier in Chinese, Lingua113(12),1169–1184",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://www.sciencedirect.com/science/article/pii/S0024384102001638",
      "path": null,
      "provenance": "Publisher abstract read; full paper not inspected; supplementary international research"
    },
    {
      "reference_id": "TCA-P3",
      "title": "大陆高校托管《外国语》2024,47(1)论文片段：冠词功能与独立词类之区分",
      "type": "Approved Discovery source; access status scoped",
      "url": "https://wgyxy.hznu.edu.cn/upload/resources/file/2024/05/21/7831668.pdf",
      "path": null,
      "provenance": "Search-index excerpt only; direct PDF404. Bibliographic identity/full argument Pending; counterevidence lead only"
    }
  ],
  "author": "Jinkai Liu",
  "version": "Legacy Website Import Batch 001 / Schema v1.0",
  "dates": {
    "created": null,
    "modified": "2026-09-01",
    "published": null
  },
  "editorial_notes": [
    {
      "en": "Legacy Batch 001 disposition: Reviewed; priority 89.2/100 is editorial triage only.",
      "zh-Hans": "旧站 Batch 001 归类：Reviewed；优先分 89.2/100 仅用于编辑分流。"
    },
    {
      "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
      "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
    },
    {
      "en": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。 Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending.",
      "zh-Hans": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。 Rejected / Raw Research: 甲 jiǎ, Cantonese gaap3, has no supported ONE/indefinite-article mapping. The legacy gaa3 reading is unverified; exact original locality/audio Pending."
    }
  ],
  "search_terms": [
    "a",
    "an",
    "indefinite article",
    "article",
    "一个",
    "一",
    "不定冠词",
    "甲",
    "one"
  ],
  "page": "words/a-indefinite-article.html",
  "legacy": {
    "batch_id": "LEGACY-WEBSITE-IMPORT-BATCH-001",
    "source_url": "https://languagesbook.com/glossary/a%ef%bc%8c%e4%b8%80%e4%b8%aa%e3%80%82%e7%94%b2jia%e3%80%82%e7%b2%a4%e8%af%ad%e4%b8%80%e4%b8%ba%e7%94%b2%e4%b8%8e%e8%8b%b1%e8%aa%9e%e7%b1%bb%e4%bc%bc/",
    "additional_source_urls": [],
    "source_page": 1,
    "source_site": "languagesbook.com"
  },
  "source": {
    "type": "author-published legacy website note",
    "author": "Jinkai Liu",
    "status": "Preserved; claims independently classified above",
    "normalization": "Legacy title/body excerpt retained; punctuation normalized only where needed for readability.",
    "raw_note": "a，一个。甲 jia。粤语一为甲，与英语类似。"
  },
  "batch": {
    "batch_id": "LEGACY-WEBSITE-IMPORT-BATCH-001",
    "ordinal": 6,
    "disposition": "Reviewed",
    "priority_score": 89.2
  },
  "standard_function": {
    "source": "a/an",
    "function": "English indefinite article",
    "boundary": {
      "en": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。",
      "zh-Hans": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。"
    }
  },
  "standard_translation": {
    "source": "a/an",
    "target": "不定冠词；依语境译“一＋量词”或不显译",
    "status": "Supported",
    "is_featured_mapping": false,
    "source_refs": [
      "TCA-E1",
      "TCA-E3"
    ]
  },
  "modern_standard_semantic_mapping": {
    "mapping_id": "MAP-a-indefinite-article-primary",
    "source": {
      "language": "English",
      "word": "a",
      "pronunciation": "a /ə, eɪ/; an /ən, æn/"
    },
    "target": {
      "language": "Chinese",
      "word": "不定冠词；依语境译“一＋量词”或不显译",
      "pronunciation": "Not applicable: grammatical function / construction, not a single Chinese word"
    },
    "gloss": {
      "en": "the indefinite article used before a nonspecific singular count noun",
      "zh-Hans": "用于非特指单数可数名词前的不定冠词"
    },
    "meaning": {
      "en": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。",
      "zh-Hans": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。"
    },
    "mapping_type": "Grammatical function; contextual translation, not lexical equivalence",
    "rationale": {
      "en": "Numeral, classifier and indefiniteness remain separate. a teacher → 老师：可以不出现“一”。 三个人 / 这个人都有量词“个”，不能推出“个”等于a。 Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。",
      "zh-Hans": "Numeral, classifier and indefiniteness remain separate. a teacher → 老师：可以不出现“一”。 三个人 / 这个人都有量词“个”，不能推出“个”等于a。 Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
    }
  },
  "featured_mapping_status": "Pending",
  "publication_status": "Published",
  "diachronic_semantic_mapping": {
    "model_version": "0.1",
    "historical_stages": [
      {
        "stage_id": "A1",
        "form": "ān",
        "variants": [],
        "unit_kind": "lemma",
        "language": {
          "name": "Old English",
          "code": null
        },
        "period": {
          "label": "约450–1100年语言层；非该词首次见证年",
          "start_year": null,
          "end_year": null,
          "basis": "language_period",
          "source_refs": [
            "TCA-E1",
            "TCA-E2"
          ]
        },
        "attestation_status": "attested",
        "meaning": {
          "gloss": "ONE：数词一",
          "pos": null,
          "constraints": []
        },
        "pronunciations": [],
        "relations": [],
        "source_refs": [
          "TCA-E1",
          "TCA-E2"
        ],
        "evidence_status": "mediated",
        "mapping_selection": "selected",
        "selection_note": "语法化的来源基础; Historical IPA not independently verified; keep source spelling ān"
      },
      {
        "stage_id": "A2",
        "form": "an / a",
        "variants": [],
        "unit_kind": "lemma",
        "language": {
          "name": "Middle English",
          "code": null
        },
        "period": {
          "label": "约1100–1500；AHD描述early Middle English；精确起点Pending",
          "start_year": null,
          "end_year": null,
          "basis": "language_period",
          "source_refs": [
            "TCA-E2"
          ]
        },
        "attestation_status": "attested",
        "meaning": {
          "gloss": "不定限定功能；与数词用法分化",
          "pos": null,
          "constraints": []
        },
        "pronunciations": [],
        "relations": [
          {
            "from_stage_ref": "A1",
            "relation_type": "derivation",
            "semantic_operation": {
              "type": "sense_extension",
              "description": "Numeral to indefinite function with weak pronunciation; exact first year Pending.",
              "status": "supported"
            },
            "status": "supported",
            "source_refs": [
              "TCA-E2"
            ]
          }
        ],
        "source_refs": [
          "TCA-E2"
        ],
        "evidence_status": "mediated",
        "mapping_selection": "not_selected",
        "selection_note": "弱读、元音弱化及辅音前n脱落；不是只按字母分配; Full historical IPA Pending; no modern IPA back-projection"
      },
      {
        "stage_id": "A3",
        "form": "a / an",
        "variants": [],
        "unit_kind": "lemma",
        "language": {
          "name": "Modern English",
          "code": null
        },
        "period": {
          "label": "约1500年至今；本轮比较当代标准用法",
          "start_year": null,
          "end_year": null,
          "basis": "language_period",
          "source_refs": [
            "TCA-E1",
            "TCA-E3"
          ]
        },
        "attestation_status": "attested",
        "meaning": {
          "gloss": "引入不定个体、类别成员等；不局限于听者/说者均未知",
          "pos": null,
          "constraints": []
        },
        "pronunciations": [
          {
            "pronunciation_id": "PR-A3",
            "value": "a /ə/, strong /eɪ/; an /ən/, strong /æn/",
            "notation": "IPA",
            "phonological_layer": "Modern English",
            "period": {
              "label": "Modern reference; exact documentation date not inferred",
              "start_year": null,
              "end_year": null,
              "basis": "modern_reference",
              "source_refs": []
            },
            "variety": "Modern English",
            "system": "Existing entry transcription; see original scoped assessment",
            "status": "documented",
            "source_refs": [
              "TCA-E3"
            ]
          }
        ],
        "relations": [
          {
            "from_stage_ref": "A2",
            "relation_type": "sense_continuation",
            "semantic_operation": {
              "type": "sense_continuation",
              "description": "Modern a/an coexist as conditioned allomorphs; not an→a replacement of all uses.",
              "status": "supported"
            },
            "status": "supported",
            "source_refs": [
              "TCA-E2",
              "TCA-E3"
            ]
          }
        ],
        "source_refs": [
          "TCA-E1",
          "TCA-E3"
        ],
        "evidence_status": "mediated",
        "mapping_selection": "selected",
        "selection_note": "共时异形a/an及强弱式，不是两个依次替代的阶段; a /ə/, strong /eɪ/; an /ən/, strong /æn/"
      }
    ],
    "mappings": [
      {
        "stage_mapping_id": "SM-A1",
        "stage_ref": "A1",
        "selection_reasons": [
          "explanatory_value"
        ],
        "freeze": {
          "version": "0.1",
          "meaning_note": "ONE：数词一",
          "excluded_senses": [
            "No transfer of a different stage’s meaning or pronunciation"
          ],
          "status": "editor_reviewed"
        },
        "search": {
          "status": "candidates_recorded",
          "scope": {
            "lexical_layers": [
              "Modern Mandarin",
              "Dialect"
            ],
            "phonological_layers": [
              "Existing documented reference pronunciations only"
            ],
            "semantic_seeds": [
              "ONE：数词一"
            ],
            "consonant_hypotheses": [],
            "note": "Bounded migration of existing candidate inventory; not a new Discovery Work search."
          },
          "run_refs": [],
          "stop_reason": "Existing review retained. No forced Chinese winner; unresolved evidence remains Pending."
        },
        "candidates": [
          {
            "candidate_id": "TCA-C01",
            "family_key": "legacy-a-indefinite-article",
            "target": {
              "form": "一",
              "lexical_layer": "Modern Mandarin",
              "language_variety": "Modern Mandarin",
              "period": {
                "label": "现代读音；古义引文不等于古音",
                "start_year": null,
                "end_year": null,
                "basis": "modern_reference",
                "source_refs": []
              },
              "meaning": {
                "gloss": "数词ONE；排除统一、全部等其他义",
                "pos": null,
                "constraints": [
                  "无定/类别功能不能只由数词ONE推出"
                ]
              },
              "pronunciations": [
                {
                  "pronunciation_id": "ZH-TCA-C01",
                  "value": "yī",
                  "notation": "pinyin",
                  "phonological_layer": "Modern Mandarin",
                  "period": {
                    "label": "Modern reference; exact documentation date not inferred",
                    "start_year": null,
                    "end_year": null,
                    "basis": "modern_reference",
                    "source_refs": []
                  },
                  "variety": "Modern Mandarin",
                  "system": "Existing entry transcription; see original scoped assessment",
                  "status": "documented",
                  "source_refs": [
                    "TCA-C1"
                  ]
                }
              ],
              "source_refs": [
                "TCA-C1"
              ]
            },
            "comparison": {
              "source_stage_ref": "A1",
              "source_pronunciation_ref": null,
              "target_pronunciation_ref": "ZH-TCA-C01",
              "source_span": "ān",
              "scope": "semantic_only",
              "hypothesis": {
                "group": null,
                "hit": false,
                "position": "Not applicable",
                "version": "Protocol v0.2: consonant-group generation is optional; not evidence"
              }
            },
            "role": "candidate",
            "decision": "shortlisted",
            "semantic_fit": {
              "fit": "direct",
              "confidence": "Medium",
              "rationale": "High at ONE; partial at modern article",
              "source_refs": [
                "TCA-E1",
                "TCA-E2",
                "TCA-C1"
              ]
            },
            "phonetic_fit": {
              "fit": "not_evaluated",
              "confidence": "Unknown",
              "rationale": "Low modern; historical not_evaluated; [i]与/ə,eɪ/不等同；不能将现代yī用作上古音",
              "features": {
                "onset": "No source consonant onset supporting a defined group; a/an are vowel-initial.",
                "vowel": "[i]与/ə,eɪ/不等同；不能将现代yī用作上古音",
                "coda_other_consonants": "[i]与/ə,eɪ/不等同；不能将现代yī用作上古音",
                "syllables": "Same syllable count is not evidence of equivalence.",
                "prosody": "Tone and English stress are different dimensions; no historical reconstruction inferred."
              },
              "source_refs": [
                "TCA-C1"
              ]
            },
            "evidence": [
              {
                "claim_scope": "chinese_sense",
                "status": "mediated",
                "source_refs": [
                  "TCA-C1"
                ],
                "locator": null,
                "note": "Online sense supported; print/early dating Pending"
              },
              {
                "claim_scope": "comparison_inference",
                "status": "lead",
                "source_refs": [
                  "TCA-C1"
                ],
                "locator": null,
                "note": "Editorial comparison; previous qualitative levels and unvalidated component scores remain in original Research fields."
              },
              {
                "claim_scope": "chinese_sense",
                "status": "pending",
                "source_refs": [],
                "locator": null,
                "note": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
              }
            ],
            "historical_relation": {
              "status": "Not claimed",
              "source_refs": [],
              "review_note": "No independent cross-language historical evidence introduced."
            },
            "confounds": [
              "无定/类别功能不能只由数词ONE推出",
              "a teacher → 老师：可以不出现“一”。",
              "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
              "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
            ],
            "discovery_priority": "medium",
            "decision_reason": "historical ONE ↔ 一 yī: direct semantic comparison only; not modern article equivalence.",
            "review": {
              "status": "reviewed",
              "reviewer": "Jinkai Liu",
              "date": "2026-09-20",
              "note": "Approved final Tier C Editorial Freeze; no new Discovery."
            }
          },
          {
            "candidate_id": "TCA-C03",
            "family_key": "legacy-a-indefinite-article",
            "target": {
              "form": "一",
              "lexical_layer": "Dialect",
              "language_variety": "Contemporary Cantonese reference; exact original observation locality Pending",
              "period": {
                "label": "现代粤语参照；地域细分原始方言条目Pending",
                "start_year": null,
                "end_year": null,
                "basis": "modern_reference",
                "source_refs": []
              },
              "meaning": {
                "gloss": "数词一；量词构式功能不能凭读音继承",
                "pos": null,
                "constraints": [
                  "旧注未指定地点/录音；不能排除其他方言变体，也不能把旧记音认作标准粤语"
                ]
              },
              "pronunciations": [
                {
                  "pronunciation_id": "ZH-TCA-C03",
                  "value": "jat1",
                  "notation": "source_notation",
                  "phonological_layer": "Contemporary Cantonese",
                  "period": {
                    "label": "Modern reference; exact documentation date not inferred",
                    "start_year": null,
                    "end_year": null,
                    "basis": "modern_reference",
                    "source_refs": []
                  },
                  "variety": "Guangzhou/Hong Kong reference, not all Yue varieties",
                  "system": "Jyutping as listed by Zdic",
                  "status": "documented",
                  "source_refs": [
                    "TCA-C1"
                  ]
                }
              ],
              "source_refs": [
                "TCA-C1"
              ]
            },
            "comparison": {
              "source_stage_ref": "A1",
              "source_pronunciation_ref": null,
              "target_pronunciation_ref": "ZH-TCA-C03",
              "source_span": "ān",
              "scope": "semantic_only",
              "hypothesis": {
                "group": null,
                "hit": false,
                "position": "Not applicable",
                "version": "Protocol v0.2: consonant-group generation is optional; not evidence"
              }
            },
            "role": "candidate",
            "decision": "reserved",
            "semantic_fit": {
              "fit": "direct",
              "confidence": "Medium",
              "rationale": "High for ONE; article role Pending",
              "source_refs": [
                "TCA-E1",
                "TCA-E2",
                "TCA-C1"
              ]
            },
            "phonetic_fit": {
              "fit": "not_evaluated",
              "confidence": "Unknown",
              "rationale": "Low; jat1有/j/和塞音尾/t/，a无此两项，an尾/n/也不同；声调不等于重音",
              "features": {
                "onset": "No source consonant onset supporting a defined group; a/an are vowel-initial.",
                "vowel": "jat1有/j/和塞音尾/t/，a无此两项，an尾/n/也不同；声调不等于重音",
                "coda_other_consonants": "jat1有/j/和塞音尾/t/，a无此两项，an尾/n/也不同；声调不等于重音",
                "syllables": "Same syllable count is not evidence of equivalence.",
                "prosody": "Tone and English stress are different dimensions; no historical reconstruction inferred."
              },
              "source_refs": [
                "TCA-C1"
              ]
            },
            "evidence": [
              {
                "claim_scope": "chinese_sense",
                "status": "mediated",
                "source_refs": [
                  "TCA-C1"
                ],
                "locator": null,
                "note": "Online Cantonese reading; Mainland dialect print entry/construction Pending"
              },
              {
                "claim_scope": "comparison_inference",
                "status": "lead",
                "source_refs": [
                  "TCA-C1"
                ],
                "locator": null,
                "note": "Editorial comparison; previous qualitative levels and unvalidated component scores remain in original Research fields."
              },
              {
                "claim_scope": "chinese_sense",
                "status": "pending",
                "source_refs": [],
                "locator": null,
                "note": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
              }
            ],
            "historical_relation": {
              "status": "Not claimed",
              "source_refs": [],
              "review_note": "No independent cross-language historical evidence introduced."
            },
            "confounds": [
              "旧注未指定地点/录音；不能排除其他方言变体，也不能把旧记音认作标准粤语",
              "a teacher → 老师：可以不出现“一”。",
              "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
              "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
            ],
            "discovery_priority": "medium",
            "decision_reason": "Retain limited; no Featured; 旧注未指定地点/录音；不能排除其他方言变体，也不能把旧记音认作标准粤语",
            "review": {
              "status": "reviewed",
              "reviewer": "Jinkai Liu",
              "date": "2026-09-20",
              "note": "Approved final Tier C Editorial Freeze; no new Discovery."
            }
          }
        ],
        "review": {
          "status": "reviewed",
          "reviewer": "Jinkai Liu",
          "date": "2026-09-20",
          "note": "Approved final Tier C Editorial Freeze; no new Discovery."
        }
      },
      {
        "stage_mapping_id": "SM-A3",
        "stage_ref": "A3",
        "selection_reasons": [
          "explanatory_value",
          "phonetic_form_value"
        ],
        "freeze": {
          "version": "0.1",
          "meaning_note": "引入不定个体、类别成员等；不局限于听者/说者均未知",
          "excluded_senses": [
            "No transfer of a different stage’s meaning or pronunciation"
          ],
          "status": "editor_reviewed"
        },
        "search": {
          "status": "candidates_recorded",
          "scope": {
            "lexical_layers": [
              "Modern Mandarin"
            ],
            "phonological_layers": [
              "Existing documented reference pronunciations only"
            ],
            "semantic_seeds": [
              "引入不定个体、类别成员等；不局限于听者/说者均未知"
            ],
            "consonant_hypotheses": [],
            "note": "Bounded migration of existing candidate inventory; not a new Discovery Work search."
          },
          "run_refs": [],
          "stop_reason": "Existing review retained. No forced Chinese winner; unresolved evidence remains Pending."
        },
        "candidates": [
          {
            "candidate_id": "TCA-C02",
            "family_key": "legacy-a-indefinite-article",
            "target": {
              "form": "一 + classifier + noun",
              "lexical_layer": "Modern Mandarin",
              "language_variety": "Modern Mandarin",
              "period": {
                "label": "当代；完整语法化年代链Pending",
                "start_year": null,
                "end_year": null,
                "basis": "modern_reference",
                "source_refs": []
              },
              "meaning": {
                "gloss": "适用构式中引入一个个体；数词/限定功能须逐例区分",
                "pos": null,
                "constraints": [
                  "并非所有“一量名”都无定；不主张已形成独立冠词词类或与英语相同年代史"
                ]
              },
              "pronunciations": [
                {
                  "pronunciation_id": "ZH-TCA-C02",
                  "value": "yī + classifier + noun (dictionary forms; connected speech varies)",
                  "notation": "pinyin",
                  "phonological_layer": "Modern Mandarin",
                  "period": {
                    "label": "Modern reference; exact documentation date not inferred",
                    "start_year": null,
                    "end_year": null,
                    "basis": "modern_reference",
                    "source_refs": []
                  },
                  "variety": "Modern Mandarin",
                  "system": "Existing entry transcription; see original scoped assessment",
                  "status": "documented",
                  "source_refs": [
                    "TCA-C1",
                    "TCA-C2",
                    "TCA-P1",
                    "TCA-P2"
                  ]
                }
              ],
              "source_refs": [
                "TCA-C1",
                "TCA-C2",
                "TCA-P1",
                "TCA-P2"
              ]
            },
            "comparison": {
              "source_stage_ref": "A3",
              "source_pronunciation_ref": "PR-A3",
              "target_pronunciation_ref": "ZH-TCA-C02",
              "source_span": "a + singular count noun; grammatical/structural comparison",
              "scope": "semantic_only",
              "hypothesis": {
                "group": null,
                "hit": false,
                "position": "Not applicable",
                "version": "Protocol v0.2: consonant-group generation is optional; not evidence"
              }
            },
            "role": "candidate",
            "decision": "shortlisted",
            "semantic_fit": {
              "fit": "direct",
              "confidence": "Medium",
              "rationale": "High in selected indefinite NPs; not universal",
              "source_refs": [
                "TCA-E1",
                "TCA-E3",
                "TCA-C1",
                "TCA-C2",
                "TCA-P1",
                "TCA-P2"
              ]
            },
            "phonetic_fit": {
              "fit": "weak",
              "confidence": "Low",
              "rationale": "Low; 多成分构式不能被缩成/a/；音节数和辅音均不匹配",
              "features": {
                "onset": "No source consonant onset supporting a defined group; a/an are vowel-initial.",
                "vowel": "多成分构式不能被缩成/a/；音节数和辅音均不匹配",
                "coda_other_consonants": "多成分构式不能被缩成/a/；音节数和辅音均不匹配",
                "syllables": "Construction length is not a one-syllable match.",
                "prosody": "Tone and English stress are different dimensions; no historical reconstruction inferred."
              },
              "source_refs": [
                "TCA-C1",
                "TCA-C2",
                "TCA-P1",
                "TCA-P2"
              ]
            },
            "evidence": [
              {
                "claim_scope": "chinese_sense",
                "status": "mediated",
                "source_refs": [
                  "TCA-C1",
                  "TCA-C2",
                  "TCA-P1",
                  "TCA-P2"
                ],
                "locator": null,
                "note": "Online senses + Mainland paper abstract + supplementary research abstract"
              },
              {
                "claim_scope": "comparison_inference",
                "status": "lead",
                "source_refs": [
                  "TCA-C1",
                  "TCA-C2",
                  "TCA-P1",
                  "TCA-P2"
                ],
                "locator": null,
                "note": "Editorial comparison; previous qualitative levels and unvalidated component scores remain in original Research fields."
              },
              {
                "claim_scope": "chinese_sense",
                "status": "pending",
                "source_refs": [],
                "locator": null,
                "note": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
              }
            ],
            "historical_relation": {
              "status": "Not claimed",
              "source_refs": [],
              "review_note": "No independent cross-language historical evidence introduced."
            },
            "confounds": [
              "并非所有“一量名”都无定；不主张已形成独立冠词词类或与英语相同年代史",
              "a teacher → 老师：可以不出现“一”。",
              "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
              "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
            ],
            "discovery_priority": "medium",
            "decision_reason": "Structural Mapping ≠ lexical equivalence. 一 + classifier + noun对应限定构式，不表示a等于一；Phonetic Fit Low。",
            "review": {
              "status": "reviewed",
              "reviewer": "Jinkai Liu",
              "date": "2026-09-20",
              "note": "Approved final Tier C Editorial Freeze; no new Discovery."
            }
          },
          {
            "candidate_id": "TCA-C04",
            "family_key": "legacy-a-indefinite-article",
            "target": {
              "form": "个",
              "lexical_layer": "Modern Mandarin",
              "language_variety": "Modern Mandarin",
              "period": {
                "label": "现代；页面古例仅mediated，不证明冠词起点",
                "start_year": null,
                "end_year": null,
                "basis": "modern_reference",
                "source_refs": []
              },
              "meaning": {
                "gloss": "量词；限“来了个人”等个体化构式",
                "pos": null,
                "constraints": [
                  "不能把一＋个整体功能全部归给个；排除gě自个儿义和古代这/那义"
                ]
              },
              "pronunciations": [
                {
                  "pronunciation_id": "ZH-TCA-C04",
                  "value": "gè",
                  "notation": "pinyin",
                  "phonological_layer": "Modern Mandarin",
                  "period": {
                    "label": "Modern reference; exact documentation date not inferred",
                    "start_year": null,
                    "end_year": null,
                    "basis": "modern_reference",
                    "source_refs": []
                  },
                  "variety": "Modern Mandarin",
                  "system": "Existing entry transcription; see original scoped assessment",
                  "status": "documented",
                  "source_refs": [
                    "TCA-C2",
                    "TCA-P2"
                  ]
                }
              ],
              "source_refs": [
                "TCA-C2",
                "TCA-P2"
              ]
            },
            "comparison": {
              "source_stage_ref": "A3",
              "source_pronunciation_ref": "PR-A3",
              "target_pronunciation_ref": "ZH-TCA-C04",
              "source_span": "a / an",
              "scope": "semantic_only",
              "hypothesis": {
                "group": null,
                "hit": false,
                "position": "Not applicable",
                "version": "Protocol v0.2: consonant-group generation is optional; not evidence"
              }
            },
            "role": "candidate",
            "decision": "reserved",
            "semantic_fit": {
              "fit": "partial",
              "confidence": "Medium",
              "rationale": "Partial; construction-dependent",
              "source_refs": [
                "TCA-E1",
                "TCA-E3",
                "TCA-C2",
                "TCA-P2"
              ]
            },
            "phonetic_fit": {
              "fit": "weak",
              "confidence": "Low",
              "rationale": "Low; /k/为额外声母；局部弱读元音近似不能抵消句法差异",
              "features": {
                "onset": "No source consonant onset supporting a defined group; a/an are vowel-initial.",
                "vowel": "/k/为额外声母；局部弱读元音近似不能抵消句法差异",
                "coda_other_consonants": "/k/为额外声母；局部弱读元音近似不能抵消句法差异",
                "syllables": "Same syllable count is not evidence of equivalence.",
                "prosody": "Tone and English stress are different dimensions; no historical reconstruction inferred."
              },
              "source_refs": [
                "TCA-C2",
                "TCA-P2"
              ]
            },
            "evidence": [
              {
                "claim_scope": "chinese_sense",
                "status": "mediated",
                "source_refs": [
                  "TCA-C2",
                  "TCA-P2"
                ],
                "locator": null,
                "note": "Concrete online classifier sense; exact grammatical status Pending"
              },
              {
                "claim_scope": "comparison_inference",
                "status": "lead",
                "source_refs": [
                  "TCA-C2",
                  "TCA-P2"
                ],
                "locator": null,
                "note": "Editorial comparison; previous qualitative levels and unvalidated component scores remain in original Research fields."
              },
              {
                "claim_scope": "chinese_sense",
                "status": "pending",
                "source_refs": [],
                "locator": null,
                "note": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
              }
            ],
            "historical_relation": {
              "status": "Not claimed",
              "source_refs": [],
              "review_note": "No independent cross-language historical evidence introduced."
            },
            "confounds": [
              "不能把一＋个整体功能全部归给个；排除gě自个儿义和古代这/那义",
              "a teacher → 老师：可以不出现“一”。",
              "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
              "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
            ],
            "discovery_priority": "medium",
            "decision_reason": "Retain limited Research; 不能把一＋个整体功能全部归给个；排除gě自个儿义和古代这/那义",
            "review": {
              "status": "reviewed",
              "reviewer": "Jinkai Liu",
              "date": "2026-09-20",
              "note": "Approved final Tier C Editorial Freeze; no new Discovery."
            }
          },
          {
            "candidate_id": "TCA-C05",
            "family_key": "legacy-a-indefinite-article",
            "target": {
              "form": "甲",
              "lexical_layer": "Modern Mandarin",
              "language_variety": "Modern Mandarin",
              "period": {
                "label": "现代参照；旧注采集年代/地域未明",
                "start_year": null,
                "end_year": null,
                "basis": "modern_reference",
                "source_refs": []
              },
              "meaning": {
                "gloss": "甲壳、天干首位等；本轮未发现ONE/indefinite article义",
                "pos": null,
                "constraints": [
                  "首位/第一不等于数词一，更不等于不定冠词；不得替作者猜成个或其他字"
                ]
              },
              "pronunciations": [
                {
                  "pronunciation_id": "ZH-TCA-C05",
                  "value": "jiǎ",
                  "notation": "pinyin",
                  "phonological_layer": "Modern Mandarin",
                  "period": {
                    "label": "Modern reference; exact documentation date not inferred",
                    "start_year": null,
                    "end_year": null,
                    "basis": "modern_reference",
                    "source_refs": []
                  },
                  "variety": "Modern Mandarin",
                  "system": "Existing entry transcription; see original scoped assessment",
                  "status": "documented",
                  "source_refs": [
                    "TCA-C3"
                  ]
                },
                {
                  "pronunciation_id": "ZH-TCA-C05-YUE",
                  "value": "gaap3",
                  "notation": "source_notation",
                  "phonological_layer": "Contemporary Cantonese",
                  "period": {
                    "label": "Modern reference; exact documentation date not inferred",
                    "start_year": null,
                    "end_year": null,
                    "basis": "modern_reference",
                    "source_refs": []
                  },
                  "variety": "Contemporary Cantonese",
                  "system": "Existing entry transcription; see original scoped assessment",
                  "status": "documented",
                  "source_refs": [
                    "TCA-C3"
                  ]
                }
              ],
              "source_refs": [
                "TCA-C3"
              ]
            },
            "comparison": {
              "source_stage_ref": "A3",
              "source_pronunciation_ref": "PR-A3",
              "target_pronunciation_ref": "ZH-TCA-C05",
              "source_span": "a / an",
              "scope": "semantic_only",
              "hypothesis": {
                "group": null,
                "hit": false,
                "position": "Not applicable",
                "version": "Protocol v0.2: consonant-group generation is optional; not evidence"
              }
            },
            "role": "candidate",
            "decision": "rejected",
            "semantic_fit": {
              "fit": "mismatch",
              "confidence": "Medium",
              "rationale": "Mismatch",
              "source_refs": [
                "TCA-E1",
                "TCA-E3",
                "TCA-C3"
              ]
            },
            "phonetic_fit": {
              "fit": "weak",
              "confidence": "Low",
              "rationale": "Low; 粤语有/k/及/p/尾；普通话有/tɕ/介音；都不等于a/an",
              "features": {
                "onset": "No source consonant onset supporting a defined group; a/an are vowel-initial.",
                "vowel": "粤语有/k/及/p/尾；普通话有/tɕ/介音；都不等于a/an",
                "coda_other_consonants": "粤语有/k/及/p/尾；普通话有/tɕ/介音；都不等于a/an",
                "syllables": "Same syllable count is not evidence of equivalence.",
                "prosody": "Tone and English stress are different dimensions; no historical reconstruction inferred."
              },
              "source_refs": [
                "TCA-C3"
              ]
            },
            "evidence": [
              {
                "claim_scope": "chinese_sense",
                "status": "mediated",
                "source_refs": [
                  "TCA-C3"
                ],
                "locator": null,
                "note": "Online contrary reading/sense evidence; original author hearing unresolved"
              },
              {
                "claim_scope": "comparison_inference",
                "status": "lead",
                "source_refs": [
                  "TCA-C3"
                ],
                "locator": null,
                "note": "Editorial comparison; previous qualitative levels and unvalidated component scores remain in original Research fields."
              },
              {
                "claim_scope": "chinese_sense",
                "status": "pending",
                "source_refs": [],
                "locator": null,
                "note": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
              }
            ],
            "historical_relation": {
              "status": "Not claimed",
              "source_refs": [],
              "review_note": "No independent cross-language historical evidence introduced."
            },
            "confounds": [
              "首位/第一不等于数词一，更不等于不定冠词；不得替作者猜成个或其他字",
              "a teacher → 老师：可以不出现“一”。",
              "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
              "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
            ],
            "discovery_priority": "none",
            "decision_reason": "Reject current Mapping; retain provenance; 首位/第一不等于数词一，更不等于不定冠词；不得替作者猜成个或其他字",
            "review": {
              "status": "reviewed",
              "reviewer": "Jinkai Liu",
              "date": "2026-09-20",
              "note": "Approved final Tier C Editorial Freeze; no new Discovery."
            }
          },
          {
            "candidate_id": "TCA-K01",
            "family_key": "legacy-a-indefinite-article",
            "target": {
              "form": "啊",
              "lexical_layer": "Modern Mandarin",
              "language_variety": "Modern Mandarin",
              "period": {
                "label": "现代",
                "start_year": null,
                "end_year": null,
                "basis": "modern_reference",
                "source_refs": []
              },
              "meaning": {
                "gloss": "句末语气，不是限定词",
                "pos": null,
                "constraints": [
                  "同为弱读/虚词不证明同类语法功能"
                ]
              },
              "pronunciations": [
                {
                  "pronunciation_id": "ZH-TCA-K01",
                  "value": "a (neutral-tone particle)",
                  "notation": "pinyin",
                  "phonological_layer": "Modern Mandarin",
                  "period": {
                    "label": "Modern reference; exact documentation date not inferred",
                    "start_year": null,
                    "end_year": null,
                    "basis": "modern_reference",
                    "source_refs": []
                  },
                  "variety": "Modern Mandarin",
                  "system": "Existing entry transcription; see original scoped assessment",
                  "status": "documented",
                  "source_refs": [
                    "TCA-C5"
                  ]
                }
              ],
              "source_refs": [
                "TCA-C5"
              ]
            },
            "comparison": {
              "source_stage_ref": "A3",
              "source_pronunciation_ref": "PR-A3",
              "target_pronunciation_ref": "ZH-TCA-K01",
              "source_span": "a / an",
              "scope": "semantic_only",
              "hypothesis": {
                "group": null,
                "hit": false,
                "position": "Not applicable",
                "version": "Protocol v0.2: consonant-group generation is optional; not evidence"
              }
            },
            "role": "sound_control",
            "decision": "rejected",
            "semantic_fit": {
              "fit": "mismatch",
              "confidence": "Medium",
              "rationale": "Mismatch",
              "source_refs": [
                "TCA-E1",
                "TCA-E3",
                "TCA-C5"
              ]
            },
            "phonetic_fit": {
              "fit": "weak",
              "confidence": "Low",
              "rationale": "Limited surface resemblance only; 元音单音节有表层兴趣，但/a/不等于弱式/ə/或强式/eɪ/；句法位置不同",
              "features": {
                "onset": "No source consonant onset supporting a defined group; a/an are vowel-initial.",
                "vowel": "元音单音节有表层兴趣，但/a/不等于弱式/ə/或强式/eɪ/；句法位置不同",
                "coda_other_consonants": "元音单音节有表层兴趣，但/a/不等于弱式/ə/或强式/eɪ/；句法位置不同",
                "syllables": "Same syllable count is not evidence of equivalence.",
                "prosody": "Tone and English stress are different dimensions; no historical reconstruction inferred."
              },
              "source_refs": [
                "TCA-C5"
              ]
            },
            "evidence": [
              {
                "claim_scope": "chinese_sense",
                "status": "mediated",
                "source_refs": [
                  "TCA-C5"
                ],
                "locator": null,
                "note": "Online concrete particle sense"
              },
              {
                "claim_scope": "comparison_inference",
                "status": "lead",
                "source_refs": [
                  "TCA-C5"
                ],
                "locator": null,
                "note": "Editorial comparison; previous qualitative levels and unvalidated component scores remain in original Research fields."
              },
              {
                "claim_scope": "chinese_sense",
                "status": "pending",
                "source_refs": [],
                "locator": null,
                "note": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
              }
            ],
            "historical_relation": {
              "status": "Not claimed",
              "source_refs": [],
              "review_note": "No independent cross-language historical evidence introduced."
            },
            "confounds": [
              "同为弱读/虚词不证明同类语法功能",
              "a teacher → 老师：可以不出现“一”。",
              "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
              "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
            ],
            "discovery_priority": "none",
            "decision_reason": "Sound control; rejected Featured; 同为弱读/虚词不证明同类语法功能",
            "review": {
              "status": "reviewed",
              "reviewer": "Jinkai Liu",
              "date": "2026-09-20",
              "note": "Approved final Tier C Editorial Freeze; no new Discovery."
            }
          },
          {
            "candidate_id": "TCA-K02",
            "family_key": "legacy-a-indefinite-article",
            "target": {
              "form": "安",
              "lexical_layer": "Modern Mandarin",
              "language_variety": "Modern Mandarin",
              "period": {
                "label": "现代读音、安定义",
                "start_year": null,
                "end_year": null,
                "basis": "modern_reference",
                "source_refs": []
              },
              "meaning": {
                "gloss": "安定/安全；不取疑问义",
                "pos": null,
                "constraints": [
                  "不得将尾n套入d-t-n-l；不比较未核Old English IPA"
                ]
              },
              "pronunciations": [
                {
                  "pronunciation_id": "ZH-TCA-K02",
                  "value": "ān",
                  "notation": "pinyin",
                  "phonological_layer": "Modern Mandarin",
                  "period": {
                    "label": "Modern reference; exact documentation date not inferred",
                    "start_year": null,
                    "end_year": null,
                    "basis": "modern_reference",
                    "source_refs": []
                  },
                  "variety": "Modern Mandarin",
                  "system": "Existing entry transcription; see original scoped assessment",
                  "status": "documented",
                  "source_refs": [
                    "TCA-C6"
                  ]
                }
              ],
              "source_refs": [
                "TCA-C6"
              ]
            },
            "comparison": {
              "source_stage_ref": "A3",
              "source_pronunciation_ref": "PR-A3",
              "target_pronunciation_ref": "ZH-TCA-K02",
              "source_span": "a / an",
              "scope": "semantic_only",
              "hypothesis": {
                "group": null,
                "hit": false,
                "position": "Not applicable",
                "version": "Protocol v0.2: consonant-group generation is optional; not evidence"
              }
            },
            "role": "sound_control",
            "decision": "rejected",
            "semantic_fit": {
              "fit": "mismatch",
              "confidence": "Medium",
              "rationale": "Mismatch",
              "source_refs": [
                "TCA-E1",
                "TCA-E3",
                "TCA-C6"
              ]
            },
            "phonetic_fit": {
              "fit": "partial",
              "confidence": "Low",
              "rationale": "Medium partial against strong an; no semantic support; 都有鼻音尾/n/；元音/æ/与汉语an有差异且有声调；拼写an相同不等于同音",
              "features": {
                "onset": "No source consonant onset supporting a defined group; a/an are vowel-initial.",
                "vowel": "都有鼻音尾/n/；元音/æ/与汉语an有差异且有声调；拼写an相同不等于同音",
                "coda_other_consonants": "都有鼻音尾/n/；元音/æ/与汉语an有差异且有声调；拼写an相同不等于同音",
                "syllables": "Same syllable count is not evidence of equivalence.",
                "prosody": "Tone and English stress are different dimensions; no historical reconstruction inferred."
              },
              "source_refs": [
                "TCA-C6"
              ]
            },
            "evidence": [
              {
                "claim_scope": "chinese_sense",
                "status": "mediated",
                "source_refs": [
                  "TCA-C6"
                ],
                "locator": null,
                "note": "Online concrete sense"
              },
              {
                "claim_scope": "comparison_inference",
                "status": "lead",
                "source_refs": [
                  "TCA-C6"
                ],
                "locator": null,
                "note": "Editorial comparison; previous qualitative levels and unvalidated component scores remain in original Research fields."
              },
              {
                "claim_scope": "chinese_sense",
                "status": "pending",
                "source_refs": [],
                "locator": null,
                "note": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
              }
            ],
            "historical_relation": {
              "status": "Not claimed",
              "source_refs": [],
              "review_note": "No independent cross-language historical evidence introduced."
            },
            "confounds": [
              "不得将尾n套入d-t-n-l；不比较未核Old English IPA",
              "a teacher → 老师：可以不出现“一”。",
              "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
              "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
            ],
            "discovery_priority": "none",
            "decision_reason": "Sound control; rejected Featured; 不得将尾n套入d-t-n-l；不比较未核Old English IPA",
            "review": {
              "status": "reviewed",
              "reviewer": "Jinkai Liu",
              "date": "2026-09-20",
              "note": "Approved final Tier C Editorial Freeze; no new Discovery."
            }
          },
          {
            "candidate_id": "TCA-K03",
            "family_key": "legacy-a-indefinite-article",
            "target": {
              "form": "某",
              "lexical_layer": "Modern Mandarin",
              "language_variety": "Modern Mandarin",
              "period": {
                "label": "现代；引用古例年代仅属原文metadata",
                "start_year": null,
                "end_year": null,
                "basis": "modern_reference",
                "source_refs": []
              },
              "meaning": {
                "gloss": "不明说/不明确指明的人或物",
                "pos": null,
                "constraints": [
                  "某常意味着特定但不明说；a可有非特指、类指和职业类别义"
                ]
              },
              "pronunciations": [
                {
                  "pronunciation_id": "ZH-TCA-K03",
                  "value": "mǒu",
                  "notation": "pinyin",
                  "phonological_layer": "Modern Mandarin",
                  "period": {
                    "label": "Modern reference; exact documentation date not inferred",
                    "start_year": null,
                    "end_year": null,
                    "basis": "modern_reference",
                    "source_refs": []
                  },
                  "variety": "Modern Mandarin",
                  "system": "Existing entry transcription; see original scoped assessment",
                  "status": "documented",
                  "source_refs": [
                    "TCA-C4"
                  ]
                }
              ],
              "source_refs": [
                "TCA-C4"
              ]
            },
            "comparison": {
              "source_stage_ref": "A3",
              "source_pronunciation_ref": "PR-A3",
              "target_pronunciation_ref": "ZH-TCA-K03",
              "source_span": "a / an",
              "scope": "semantic_only",
              "hypothesis": {
                "group": null,
                "hit": false,
                "position": "Not applicable",
                "version": "Protocol v0.2: consonant-group generation is optional; not evidence"
              }
            },
            "role": "meaning_control",
            "decision": "reserved",
            "semantic_fit": {
              "fit": "partial",
              "confidence": "Medium",
              "rationale": "High in selected unspecified contexts; partial overall",
              "source_refs": [
                "TCA-E1",
                "TCA-E3",
                "TCA-C4"
              ]
            },
            "phonetic_fit": {
              "fit": "weak",
              "confidence": "Low",
              "rationale": "Low; /m/与复合韵母不匹配a/an；入b-p-m-f无来源声母支撑",
              "features": {
                "onset": "No source consonant onset supporting a defined group; a/an are vowel-initial.",
                "vowel": "/m/与复合韵母不匹配a/an；入b-p-m-f无来源声母支撑",
                "coda_other_consonants": "/m/与复合韵母不匹配a/an；入b-p-m-f无来源声母支撑",
                "syllables": "Same syllable count is not evidence of equivalence.",
                "prosody": "Tone and English stress are different dimensions; no historical reconstruction inferred."
              },
              "source_refs": [
                "TCA-C4"
              ]
            },
            "evidence": [
              {
                "claim_scope": "chinese_sense",
                "status": "mediated",
                "source_refs": [
                  "TCA-C4"
                ],
                "locator": null,
                "note": "Online basic/detailed sense"
              },
              {
                "claim_scope": "comparison_inference",
                "status": "lead",
                "source_refs": [
                  "TCA-C4"
                ],
                "locator": null,
                "note": "Editorial comparison; previous qualitative levels and unvalidated component scores remain in original Research fields."
              },
              {
                "claim_scope": "chinese_sense",
                "status": "pending",
                "source_refs": [],
                "locator": null,
                "note": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
              }
            ],
            "historical_relation": {
              "status": "Not claimed",
              "source_refs": [],
              "review_note": "No independent cross-language historical evidence introduced."
            },
            "confounds": [
              "某常意味着特定但不明说；a可有非特指、类指和职业类别义",
              "a teacher → 老师：可以不出现“一”。",
              "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
              "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
            ],
            "discovery_priority": "none",
            "decision_reason": "Semantic control; not shortlisted; 某常意味着特定但不明说；a可有非特指、类指和职业类别义",
            "review": {
              "status": "reviewed",
              "reviewer": "Jinkai Liu",
              "date": "2026-09-20",
              "note": "Approved final Tier C Editorial Freeze; no new Discovery."
            }
          }
        ],
        "review": {
          "status": "reviewed",
          "reviewer": "Jinkai Liu",
          "date": "2026-09-20",
          "note": "Approved final Tier C Editorial Freeze; no new Discovery."
        }
      }
    ],
    "display_selection": {
      "featured_candidate_ref": null,
      "stage_cards": [
        {
          "stage_mapping_ref": "SM-A3",
          "candidate_ref": "TCA-C02"
        },
        {
          "stage_mapping_ref": "SM-A1",
          "candidate_ref": "TCA-C01"
        }
      ],
      "review_status": "approved",
      "reviewer": "Jinkai Liu",
      "reason": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。"
    },
    "historical_path": "Old English ān → Middle English an/a → Modern English a/an; modern one is a related continuation, not an ancestor.",
    "semantic_path": "ONE → indefinite grammatical function; modern numeral, classifier and indefiniteness are distinct.",
    "boundary": {
      "en": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。",
      "zh-Hans": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。"
    }
  },
  "structural_semantic_mapping": {
    "source_stage_refs": [
      "A3"
    ],
    "chinese_candidate_ref": "TCA-C02",
    "source_construction": "a + singular count noun",
    "target_construction": "一 + classifier + noun",
    "type": "Grammatical / Structural-Semantic comparison",
    "fit": "High within selected constructions, not all uses",
    "phonetic_fit": "Low",
    "historical_relation": "Not claimed",
    "counterexamples": [
      "a teacher → 老师：可以不出现“一”。",
      "三个人 / 这个人都有量词“个”，不能推出“个”等于a。",
      "Numeral、classifier、indefiniteness分别处理；不声称两种语言具有相同语法化年表。"
    ],
    "lexical_equivalence": false
  },
  "consonant_group_expansion": {
    "status": "Not applicable",
    "reason": "No applicable consonant-onset anchor; an coda n is not an onset group hit."
  },
  "research_candidate_discovery": {
    "run_id": "tier-c-final-a-discovery-2026-09-20",
    "candidates": [
      {
        "id": "C01",
        "chinese_form": "一",
        "reading": "yī",
        "chinese_layer": "Modern Mandarin; inherited numeral sense",
        "chinese_period": "现代读音；古义引文不等于古音",
        "target_stage": "A1",
        "documented_meaning": "数词ONE；排除统一、全部等其他义",
        "semantic_fit": "High at ONE; partial at modern article",
        "phonetic_fit": "Low modern; historical not_evaluated",
        "phonetic_rationale": "[i]与/ə,eɪ/不等同；不能将现代yī用作上古音",
        "evidence_status": "Online sense supported; print/early dating Pending",
        "source_refs": [
          "C1"
        ],
        "consonant_group_relation": "No applicable onset group",
        "counterevidence": "无定/类别功能不能只由数词ONE推出",
        "decision": "Shortlist #2",
        "discovery_priority": "High",
        "historical_relation": "Not claimed",
        "mainland_print_status": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
      },
      {
        "id": "C02",
        "chinese_form": "一＋量词＋名词（一个N等）",
        "reading": "yī＋CL词典式；“一个”语流可读yí ge",
        "chinese_layer": "Modern Mandarin construction",
        "chinese_period": "当代；完整语法化年代链Pending",
        "target_stage": "A2/A3",
        "documented_meaning": "适用构式中引入一个个体；数词/限定功能须逐例区分",
        "semantic_fit": "High in selected indefinite NPs; not universal",
        "phonetic_fit": "Low",
        "phonetic_rationale": "多成分构式不能被缩成/a/；音节数和辅音均不匹配",
        "evidence_status": "Online senses + Mainland paper abstract + supplementary research abstract",
        "source_refs": [
          "C1",
          "C2",
          "P1",
          "P2"
        ],
        "consonant_group_relation": "Not applicable",
        "counterevidence": "并非所有“一量名”都无定；不主张已形成独立冠词词类或与英语相同年代史",
        "decision": "Shortlist #1; structural-semantic",
        "discovery_priority": "High",
        "historical_relation": "Not claimed",
        "mainland_print_status": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
      },
      {
        "id": "C03",
        "chinese_form": "一（粤语）",
        "reading": "jat1（粤拼；不标成gaa/gaap）",
        "chinese_layer": "Dialect: contemporary Guangzhou/Hong Kong Cantonese reference",
        "chinese_period": "现代粤语参照；地域细分原始方言条目Pending",
        "target_stage": "A1; A3 only in a documented construction",
        "documented_meaning": "数词一；量词构式功能不能凭读音继承",
        "semantic_fit": "High for ONE; article role Pending",
        "phonetic_fit": "Low",
        "phonetic_rationale": "jat1有/j/和塞音尾/t/，a无此两项，an尾/n/也不同；声调不等于重音",
        "evidence_status": "Online Cantonese reading; Mainland dialect print entry/construction Pending",
        "source_refs": [
          "C1"
        ],
        "consonant_group_relation": "No applicable onset group",
        "counterevidence": "旧注未指定地点/录音；不能排除其他方言变体，也不能把旧记音认作标准粤语",
        "decision": "Retain limited; no Featured",
        "discovery_priority": "Medium",
        "historical_relation": "Not claimed",
        "mainland_print_status": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
      },
      {
        "id": "C04",
        "chinese_form": "个（個）",
        "reading": "gè；具体口语轻声ge须按构式",
        "chinese_layer": "Modern Mandarin classifier",
        "chinese_period": "现代；页面古例仅mediated，不证明冠词起点",
        "target_stage": "A3",
        "documented_meaning": "量词；限“来了个人”等个体化构式",
        "semantic_fit": "Partial; construction-dependent",
        "phonetic_fit": "Low",
        "phonetic_rationale": "/k/为额外声母；局部弱读元音近似不能抵消句法差异",
        "evidence_status": "Concrete online classifier sense; exact grammatical status Pending",
        "source_refs": [
          "C2",
          "P2"
        ],
        "consonant_group_relation": "No g-k-h hit: source a has no /k/",
        "counterevidence": "不能把一＋个整体功能全部归给个；排除gě自个儿义和古代这/那义",
        "decision": "Retain limited Research",
        "discovery_priority": "Medium",
        "historical_relation": "Not claimed",
        "mainland_print_status": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
      },
      {
        "id": "C05",
        "chinese_form": "甲（旧候选）",
        "reading": "jiǎ；广东话gaap3，旧记录gaa3未获支持",
        "chinese_layer": "Modern Mandarin / Cantonese; legacy claim audited",
        "chinese_period": "现代参照；旧注采集年代/地域未明",
        "target_stage": "A1/A3 claimed by legacy",
        "documented_meaning": "甲壳、天干首位等；本轮未发现ONE/indefinite article义",
        "semantic_fit": "Mismatch",
        "phonetic_fit": "Low",
        "phonetic_rationale": "粤语有/k/及/p/尾；普通话有/tɕ/介音；都不等于a/an",
        "evidence_status": "Online contrary reading/sense evidence; original author hearing unresolved",
        "source_refs": [
          "C3"
        ],
        "consonant_group_relation": "No applicable source onset group",
        "counterevidence": "首位/第一不等于数词一，更不等于不定冠词；不得替作者猜成个或其他字",
        "decision": "Reject current Mapping; retain provenance",
        "discovery_priority": "None",
        "historical_relation": "Not claimed",
        "mainland_print_status": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
      },
      {
        "id": "K01",
        "chinese_form": "啊",
        "reading": "a（轻声语气助词）",
        "chinese_layer": "Modern Mandarin control",
        "chinese_period": "现代",
        "target_stage": "A3 a",
        "documented_meaning": "句末语气，不是限定词",
        "semantic_fit": "Mismatch",
        "phonetic_fit": "Limited surface resemblance only",
        "phonetic_rationale": "元音单音节有表层兴趣，但/a/不等于弱式/ə/或强式/eɪ/；句法位置不同",
        "evidence_status": "Online concrete particle sense",
        "source_refs": [
          "C5"
        ],
        "consonant_group_relation": "Not applicable",
        "counterevidence": "同为弱读/虚词不证明同类语法功能",
        "decision": "Sound control; rejected Featured",
        "discovery_priority": "None",
        "historical_relation": "Not claimed",
        "mainland_print_status": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
      },
      {
        "id": "K02",
        "chinese_form": "安",
        "reading": "ān",
        "chinese_layer": "Modern Mandarin control",
        "chinese_period": "现代读音、安定义",
        "target_stage": "A3 an",
        "documented_meaning": "安定/安全；不取疑问义",
        "semantic_fit": "Mismatch",
        "phonetic_fit": "Medium partial against strong an; no semantic support",
        "phonetic_rationale": "都有鼻音尾/n/；元音/æ/与汉语an有差异且有声调；拼写an相同不等于同音",
        "evidence_status": "Online concrete sense",
        "source_refs": [
          "C6"
        ],
        "consonant_group_relation": "Coda /n/ is not an onset group hit",
        "counterevidence": "不得将尾n套入d-t-n-l；不比较未核Old English IPA",
        "decision": "Sound control; rejected Featured",
        "discovery_priority": "None",
        "historical_relation": "Not claimed",
        "mainland_print_status": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
      },
      {
        "id": "K03",
        "chinese_form": "某",
        "reading": "mǒu",
        "chinese_layer": "Modern Mandarin; selected pronominal sense",
        "chinese_period": "现代；引用古例年代仅属原文metadata",
        "target_stage": "A3 selected unspecified referent",
        "documented_meaning": "不明说/不明确指明的人或物",
        "semantic_fit": "High in selected unspecified contexts; partial overall",
        "phonetic_fit": "Low",
        "phonetic_rationale": "/m/与复合韵母不匹配a/an；入b-p-m-f无来源声母支撑",
        "evidence_status": "Online basic/detailed sense",
        "source_refs": [
          "C4"
        ],
        "consonant_group_relation": "Not applicable",
        "counterevidence": "某常意味着特定但不明说；a可有非特指、类指和职业类别义",
        "decision": "Semantic control; not shortlisted",
        "discovery_priority": "None",
        "historical_relation": "Not claimed",
        "mainland_print_status": "Pending: 未取得《现代汉语词典》《新华字典》《汉语大词典》《汉语大字典》《辞源》具体纸本条目/页码"
      }
    ],
    "freeze": "Featured Mapping: Pending。English indefinite article a/an；a + singular count noun ↔ 一 + classifier + noun仅为适用构式中的Structural-Semantic comparison，不是逐词等价。historical ONE ↔ 一 yī只属于历史数词层。Consonant-group expansion: Not applicable。",
    "independent_comparisons": []
  },
  "research_provenance": {
    "reason": "甲降为Rejected / Raw Research。现核Mandarin jiǎ / Cantonese gaap3；旧gaa3仅为未核旧记录。首位不等于ONE或冠词。",
    "original_fields": {
      "evidence": {
        "Historical": {
          "status": "Established",
          "confidence": "High",
          "summary": {
            "en": "English a is the reduced form of an, historically from Old English ān ‘one’. This Germanic history does not establish a relation to Chinese 甲 or Cantonese forms.",
            "zh-Hans": "英语 a 是 an 的弱化形式，历史上来自古英语 ān“一”；该日耳曼词史不建立它与汉字“甲”或粤语形式的关系。"
          },
          "items": [
            {
              "evidence_id": "HIST-A-INDEFINITE-ARTICLE-001",
              "claim": {
                "en": "English a is the reduced form of an, historically from Old English ān ‘one’. This Germanic history does not establish a relation to Chinese 甲 or Cantonese forms.",
                "zh-Hans": "英语 a 是 an 的弱化形式，历史上来自古英语 ān“一”；该日耳曼词史不建立它与汉字“甲”或粤语形式的关系。"
              },
              "status": "Established",
              "confidence": "High",
              "source_refs": [
                "REF-MW-A"
              ]
            }
          ],
          "source_refs": [
            "REF-MW-A"
          ]
        },
        "Phonetic-Semantic": {
          "status": "Candidate",
          "confidence": "Low",
          "summary": {
            "en": "A comparison with 甲 gaa3 or a Cantonese numeral/classifier requires exact dialect forms and regular correspondences; the legacy note alone is insufficient.",
            "zh-Hans": "与粤语“甲”gaa3 或数词／量词比较，需要精确方言形式与规律对应；旧注本身证据不足。"
          },
          "items": [
            {
              "evidence_id": "PHONSEM-A-INDEFINITE-ARTICLE-001",
              "claim": {
                "en": "A comparison with 甲 gaa3 or a Cantonese numeral/classifier requires exact dialect forms and regular correspondences; the legacy note alone is insufficient.",
                "zh-Hans": "与粤语“甲”gaa3 或数词／量词比较，需要精确方言形式与规律对应；旧注本身证据不足。"
              },
              "status": "Candidate",
              "confidence": "Low",
              "source_refs": [
                "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
                "REF-MW-A"
              ]
            }
          ],
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        },
        "Cognitive": {
          "status": "Interpretive",
          "confidence": "Medium",
          "summary": {
            "en": "ONE → AN INDEFINITE SINGLE MEMBER explains the grammatical development from numeral to article.",
            "zh-Hans": "ONE → 一个非特指单体，解释了数词向冠词的语法发展。"
          },
          "items": [
            {
              "evidence_id": "COG-A-INDEFINITE-ARTICLE-001",
              "claim": {
                "en": "ONE → AN INDEFINITE SINGLE MEMBER explains the grammatical development from numeral to article.",
                "zh-Hans": "ONE → 一个非特指单体，解释了数词向冠词的语法发展。"
              },
              "status": "Interpretive",
              "confidence": "Medium",
              "source_refs": [
                "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE"
              ]
            }
          ],
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE"
          ]
        },
        "Speculative": {
          "status": "Unestablished",
          "confidence": "High",
          "summary": {
            "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
            "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
          },
          "items": [
            {
              "evidence_id": "SPEC-A-INDEFINITE-ARTICLE-001",
              "claim": {
                "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
                "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
              },
              "status": "Unestablished",
              "confidence": "High",
              "source_refs": [
                "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
                "REF-MW-A"
              ]
            }
          ],
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        }
      },
      "phonetic_observation": [
        {
          "observation_id": "PHON-A-INDEFINITE-ARTICLE-001",
          "claim": {
            "en": "A comparison with 甲 gaa3 or a Cantonese numeral/classifier requires exact dialect forms and regular correspondences; the legacy note alone is insufficient.",
            "zh-Hans": "与粤语“甲”gaa3 或数词／量词比较，需要精确方言形式与规律对应；旧注本身证据不足。"
          },
          "status": "Candidate",
          "limitations": {
            "en": "Surface resemblance is not a regular cross-language sound correspondence and does not prove cognacy.",
            "zh-Hans": "表面音近不是规律跨语言音变，也不能证明同源。"
          }
        }
      ],
      "semantic_structure": {
        "concepts": [
          "A",
          "AN",
          "INDEFINITE ARTICLE",
          "ARTICLE"
        ],
        "relation": "a → an → indefinite article → article",
        "status": "Interpretive"
      },
      "related_words": [
        {
          "word": "an",
          "language": "English",
          "relationship_type": "historical allomorph",
          "family": "Old English ān",
          "relation_to_entry": {
            "en": "Documented relation in the stated historical family.",
            "zh-Hans": "在所列历史词族内有文献支持的关系。"
          },
          "status": "Established",
          "source_refs": [
            "REF-MW-A"
          ]
        },
        {
          "word": "one",
          "language": "English",
          "relationship_type": "historical family",
          "family": "Old English ān",
          "relation_to_entry": {
            "en": "Documented relation in the stated historical family.",
            "zh-Hans": "在所列历史词族内有文献支持的关系。"
          },
          "status": "Established",
          "source_refs": [
            "REF-MW-A"
          ]
        },
        {
          "word": "甲 gaa3",
          "language": "Cantonese/Chinese",
          "relationship_type": "author comparison requiring research",
          "family": "independent Sinitic history",
          "relation_to_entry": {
            "en": "Author comparison or semantic association only; not historical derivation.",
            "zh-Hans": "仅为作者比较或语义联想；不是历史派生。"
          },
          "status": "Interpretive",
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        }
      ],
      "hypotheses": [
        {
          "hypothesis_id": "UNI-LEGACY-A-INDEFINITE-ARTICLE-001",
          "type": "Original Author Hypothesis / legacy phonetic-semantic observation",
          "claim": {
            "en": "Jinkai Liu’s original note is preserved verbatim: “a，一个。甲 jia。粤语一为甲，与英语类似。”",
            "zh-Hans": "Jinkai Liu 原始观察逐字保留：“a，一个。甲 jia。粤语一为甲，与英语类似。”"
          },
          "status": "Candidate",
          "confidence": "Low",
          "supporting_cases": [
            "a",
            "一个／一"
          ],
          "counterexamples": [
            "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
            "No regular cross-language sound correspondence has been demonstrated."
          ],
          "testability": {
            "en": "Test phonetic similarity and semantic fit separately with blinded controls and independent historical review.",
            "zh-Hans": "以盲法对照和独立词源核验分别测试声音相似度与语义适配。"
          },
          "experiment_link": null,
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        }
      ]
    }
  },
  "legacy_migration": {
    "version": "tier-c-final-a-0.1",
    "baseline_commit": "3b9901d47f0cd9d13252e96329b96dded0be972d",
    "scope": "Exact archived pre-migration record; old readings and claims are not active evidence.",
    "previous_fields": {
      "title": {
        "en": "a · Legacy Website Import",
        "zh-Hans": "a · 旧站导入"
      },
      "primary_mapping": {
        "mapping_id": "MAP-a-indefinite-article-primary",
        "source": {
          "language": "English",
          "word": "a",
          "pronunciation": "not recorded"
        },
        "target": {
          "language": "Chinese",
          "word": "一个／一",
          "pronunciation": "yí ge / yī"
        },
        "gloss": {
          "en": "the indefinite article used before a nonspecific singular count noun",
          "zh-Hans": "用于非特指单数可数名词前的不定冠词"
        },
        "meaning": {
          "en": "the indefinite article used before a nonspecific singular count noun. The standard mapping is independent from the legacy sound hypothesis.",
          "zh-Hans": "用于非特指单数可数名词前的不定冠词。标准词义 Mapping 与旧站声音假说独立。"
        },
        "mapping_type": "Standard lexical/semantic mapping with separately graded legacy hypothesis",
        "rationale": {
          "en": "Ordinary meaning is primary; word history, sound comparison, cognition and speculation are evaluated on separate tracks.",
          "zh-Hans": "普通词义为主；词史、声音比较、认知与推测分轨评价。"
        }
      },
      "evidence": {
        "Historical": {
          "status": "Established",
          "confidence": "High",
          "summary": {
            "en": "English a is the reduced form of an, historically from Old English ān ‘one’. This Germanic history does not establish a relation to Chinese 甲 or Cantonese forms.",
            "zh-Hans": "英语 a 是 an 的弱化形式，历史上来自古英语 ān“一”；该日耳曼词史不建立它与汉字“甲”或粤语形式的关系。"
          },
          "items": [
            {
              "evidence_id": "HIST-A-INDEFINITE-ARTICLE-001",
              "claim": {
                "en": "English a is the reduced form of an, historically from Old English ān ‘one’. This Germanic history does not establish a relation to Chinese 甲 or Cantonese forms.",
                "zh-Hans": "英语 a 是 an 的弱化形式，历史上来自古英语 ān“一”；该日耳曼词史不建立它与汉字“甲”或粤语形式的关系。"
              },
              "status": "Established",
              "confidence": "High",
              "source_refs": [
                "REF-MW-A"
              ]
            }
          ],
          "source_refs": [
            "REF-MW-A"
          ]
        },
        "Phonetic-Semantic": {
          "status": "Candidate",
          "confidence": "Low",
          "summary": {
            "en": "A comparison with 甲 gaa3 or a Cantonese numeral/classifier requires exact dialect forms and regular correspondences; the legacy note alone is insufficient.",
            "zh-Hans": "与粤语“甲”gaa3 或数词／量词比较，需要精确方言形式与规律对应；旧注本身证据不足。"
          },
          "items": [
            {
              "evidence_id": "PHONSEM-A-INDEFINITE-ARTICLE-001",
              "claim": {
                "en": "A comparison with 甲 gaa3 or a Cantonese numeral/classifier requires exact dialect forms and regular correspondences; the legacy note alone is insufficient.",
                "zh-Hans": "与粤语“甲”gaa3 或数词／量词比较，需要精确方言形式与规律对应；旧注本身证据不足。"
              },
              "status": "Candidate",
              "confidence": "Low",
              "source_refs": [
                "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
                "REF-MW-A"
              ]
            }
          ],
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        },
        "Cognitive": {
          "status": "Interpretive",
          "confidence": "Medium",
          "summary": {
            "en": "ONE → AN INDEFINITE SINGLE MEMBER explains the grammatical development from numeral to article.",
            "zh-Hans": "ONE → 一个非特指单体，解释了数词向冠词的语法发展。"
          },
          "items": [
            {
              "evidence_id": "COG-A-INDEFINITE-ARTICLE-001",
              "claim": {
                "en": "ONE → AN INDEFINITE SINGLE MEMBER explains the grammatical development from numeral to article.",
                "zh-Hans": "ONE → 一个非特指单体，解释了数词向冠词的语法发展。"
              },
              "status": "Interpretive",
              "confidence": "Medium",
              "source_refs": [
                "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE"
              ]
            }
          ],
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE"
          ]
        },
        "Speculative": {
          "status": "Unestablished",
          "confidence": "High",
          "summary": {
            "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
            "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
          },
          "items": [
            {
              "evidence_id": "SPEC-A-INDEFINITE-ARTICLE-001",
              "claim": {
                "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
                "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
              },
              "status": "Unestablished",
              "confidence": "High",
              "source_refs": [
                "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
                "REF-MW-A"
              ]
            }
          ],
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        }
      },
      "phonetic_observation": [
        {
          "observation_id": "PHON-A-INDEFINITE-ARTICLE-001",
          "claim": {
            "en": "A comparison with 甲 gaa3 or a Cantonese numeral/classifier requires exact dialect forms and regular correspondences; the legacy note alone is insufficient.",
            "zh-Hans": "与粤语“甲”gaa3 或数词／量词比较，需要精确方言形式与规律对应；旧注本身证据不足。"
          },
          "status": "Candidate",
          "limitations": {
            "en": "Surface resemblance is not a regular cross-language sound correspondence and does not prove cognacy.",
            "zh-Hans": "表面音近不是规律跨语言音变，也不能证明同源。"
          }
        }
      ],
      "semantic_structure": {
        "concepts": [
          "A",
          "AN",
          "INDEFINITE ARTICLE",
          "ARTICLE"
        ],
        "relation": "a → an → indefinite article → article",
        "status": "Interpretive"
      },
      "related_words": [
        {
          "word": "an",
          "language": "English",
          "relationship_type": "historical allomorph",
          "family": "Old English ān",
          "relation_to_entry": {
            "en": "Documented relation in the stated historical family.",
            "zh-Hans": "在所列历史词族内有文献支持的关系。"
          },
          "status": "Established",
          "source_refs": [
            "REF-MW-A"
          ]
        },
        {
          "word": "one",
          "language": "English",
          "relationship_type": "historical family",
          "family": "Old English ān",
          "relation_to_entry": {
            "en": "Documented relation in the stated historical family.",
            "zh-Hans": "在所列历史词族内有文献支持的关系。"
          },
          "status": "Established",
          "source_refs": [
            "REF-MW-A"
          ]
        },
        {
          "word": "甲 gaa3",
          "language": "Cantonese/Chinese",
          "relationship_type": "author comparison requiring research",
          "family": "independent Sinitic history",
          "relation_to_entry": {
            "en": "Author comparison or semantic association only; not historical derivation.",
            "zh-Hans": "仅为作者比较或语义联想；不是历史派生。"
          },
          "status": "Interpretive",
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        }
      ],
      "hypotheses": [
        {
          "hypothesis_id": "UNI-LEGACY-A-INDEFINITE-ARTICLE-001",
          "type": "Original Author Hypothesis / legacy phonetic-semantic observation",
          "claim": {
            "en": "Jinkai Liu’s original note is preserved verbatim: “a，一个。甲 jia。粤语一为甲，与英语类似。”",
            "zh-Hans": "Jinkai Liu 原始观察逐字保留：“a，一个。甲 jia。粤语一为甲，与英语类似。”"
          },
          "status": "Candidate",
          "confidence": "Low",
          "supporting_cases": [
            "a",
            "一个／一"
          ],
          "counterexamples": [
            "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
            "No regular cross-language sound correspondence has been demonstrated."
          ],
          "testability": {
            "en": "Test phonetic similarity and semantic fit separately with blinded controls and independent historical review.",
            "zh-Hans": "以盲法对照和独立词源核验分别测试声音相似度与语义适配。"
          },
          "experiment_link": null,
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        }
      ],
      "counterevidence": [
        {
          "counterevidence_id": "COUNTER-A-INDEFINITE-ARTICLE-001",
          "statement": {
            "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
            "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
          },
          "confidence": "High",
          "source_refs": [
            "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
            "REF-MW-A"
          ]
        }
      ],
      "references": [
        {
          "reference_id": "REF-LANGUAGESBOOK-A-INDEFINITE-ARTICLE",
          "title": "languagesbook.com legacy entry: a，甲 jia。粤语一为甲与英语类似",
          "type": "legacy author publication",
          "url": "https://languagesbook.com/glossary/a%ef%bc%8c%e4%b8%80%e4%b8%aa%e3%80%82%e7%94%b2jia%e3%80%82%e7%b2%a4%e8%af%ad%e4%b8%80%e4%b8%ba%e7%94%b2%e4%b8%8e%e8%8b%b1%e8%aa%9e%e7%b1%bb%e4%bc%bc/",
          "path": null,
          "provenance": "author-published legacy website; imported 2026-09-01; original observation preserved independently from evaluation"
        },
        {
          "reference_id": "REF-MW-A",
          "title": "Merriam-Webster Dictionary: a",
          "type": "dictionary",
          "url": "https://www.merriam-webster.com/dictionary/a",
          "path": null,
          "provenance": "external lexicographic reference; accessed 2026-09-01"
        }
      ],
      "editorial_notes": [
        {
          "en": "Legacy Batch 001 disposition: Reviewed; priority 89.2/100 is editorial triage only.",
          "zh-Hans": "旧站 Batch 001 归类：Reviewed；优先分 89.2/100 仅用于编辑分流。"
        },
        {
          "en": "This lexical record is distinct from the published literary AT/在/爱 record; query ‘a’ routes here while ‘at’ remains unchanged.",
          "zh-Hans": "本词法记录与已发表的文学记录 AT／在／爱分开；查询 a 指向此条，at 保持不变。"
        }
      ],
      "page": null
    },
    "previously_absent_fields": [
      "standard_function",
      "standard_translation",
      "modern_standard_semantic_mapping",
      "featured_mapping_status",
      "publication_status",
      "diachronic_semantic_mapping",
      "structural_semantic_mapping",
      "consonant_group_expansion",
      "research_candidate_discovery",
      "research_provenance"
    ]
  }
}
