{
  "_provenance": "ja-kana precision trap corpus for kana_precision.py (D16-tail / E1-protocol extension). Sourced 2026-07-09 by a research agent: names extracted by reading the four ja PD samples (soseki-neko, akutagawa-rashomon, akutagawa-hana, dazai-merosu); collision traps from Japanese lexical knowledge, each ADJACENCY- and VOICING-checked (3 faulty candidates おなか/みがく/みんな rejected). Every trap tagged type: substring (name hides inside a longer unrelated word) vs homograph (name == a whole common noun). KEY FINDING: the substring class vanishes by MIN=3-4; the homograph class is length-INVARIANT (a MIN threshold cannot filter it — needs POS/known-word gating). kana length = CHARACTER count a substring matcher sees (ディオニス = 5 chars). Matcher kana-folds katakana->hiragana, so same-fold substrings fire.",
  "names_from_corpus": [
    {"name_kana":"メロス","len":3,"work":"merosu","romaji":"Merosu","kind":"person(protagonist)","written_kana_in_source":true},
    {"name_kana":"ゼウス","len":3,"work":"merosu","romaji":"Zeusu","kind":"deity","written_kana_in_source":true},
    {"name_kana":"シラクス","len":4,"work":"merosu","romaji":"Shirakusu","kind":"place","written_kana_in_source":true},
    {"name_kana":"アレキス","len":4,"work":"merosu","romaji":"Arekisu","kind":"person(minor)","written_kana_in_source":true},
    {"name_kana":"ディオニス","len":5,"work":"merosu","romaji":"Dionis","kind":"person(antagonist)","written_kana_in_source":true},
    {"name_kana":"セリヌンティウス","len":8,"work":"merosu","romaji":"Serinuntiusu","kind":"person","written_kana_in_source":true},
    {"name_kana":"フィロストラトス","len":8,"work":"merosu","romaji":"Firosutoratosu","kind":"person(minor)","written_kana_in_source":true},
    {"name_kana":"おさん","len":3,"work":"neko","romaji":"Osan","kind":"person(maid)","written_kana_in_source":true},
    {"name_kana":"ギボン","len":3,"work":"neko","romaji":"Gibon","kind":"reference(person)","written_kana_in_source":true},
    {"name_kana":"ニコラス","len":4,"work":"neko","romaji":"Nikorasu","kind":"reference(person)","written_kana_in_source":true},
    {"name_kana":"ハリソン","len":4,"work":"neko","romaji":"Harison","kind":"reference(person)","written_kana_in_source":true},
    {"name_kana":"アンドレア","len":5,"work":"neko","romaji":"Andorea","kind":"reference(person)","written_kana_in_source":true}
  ],
  "collision_traps": [
    {"name_kana":"リン","len":2,"romaji":"Rin","containing_word_kana":"リンゴ","containing_word_meaning":"apple","type":"substring","confidence":"high"},
    {"name_kana":"アイ","len":2,"romaji":"Ai","containing_word_kana":"アイス","containing_word_meaning":"ice/ice cream","type":"substring","confidence":"high"},
    {"name_kana":"ラン","len":2,"romaji":"Ran","containing_word_kana":"ランチ","containing_word_meaning":"lunch","type":"substring","confidence":"high"},
    {"name_kana":"はる","len":2,"romaji":"Haru","containing_word_kana":"はるばる","containing_word_meaning":"all the way/from afar","type":"substring","confidence":"high","grounded":"merosu"},
    {"name_kana":"かな","len":2,"romaji":"Kana","containing_word_kana":"かなしい","containing_word_meaning":"sad","type":"substring","confidence":"high"},
    {"name_kana":"なお","len":2,"romaji":"Nao","containing_word_kana":"すなお","containing_word_meaning":"obedient/honest","type":"substring","confidence":"high"},
    {"name_kana":"みか","len":2,"romaji":"Mika","containing_word_kana":"みかん","containing_word_meaning":"mandarin orange","type":"substring","confidence":"high"},
    {"name_kana":"ゆき","len":2,"romaji":"Yuki","containing_word_kana":"ゆきだるま","containing_word_meaning":"snowman","type":"substring","confidence":"high"},
    {"name_kana":"まり","len":2,"romaji":"Mari","containing_word_kana":"あまり","containing_word_meaning":"remainder/too much","type":"substring","confidence":"high"},
    {"name_kana":"かい","len":2,"romaji":"Kai","containing_word_kana":"せかい","containing_word_meaning":"world","type":"substring","confidence":"high"},
    {"name_kana":"れい","len":2,"romaji":"Rei","containing_word_kana":"きれい","containing_word_meaning":"pretty/clean","type":"substring","confidence":"high"},
    {"name_kana":"ゆう","len":2,"romaji":"Yuu","containing_word_kana":"ゆうがた","containing_word_meaning":"evening","type":"substring","confidence":"high","grounded":"rashomon,neko"},
    {"name_kana":"なな","len":2,"romaji":"Nana","containing_word_kana":"バナナ","containing_word_meaning":"banana","type":"substring","confidence":"high"},
    {"name_kana":"さや","len":2,"romaji":"Saya","containing_word_kana":"ささやく","containing_word_meaning":"to whisper","type":"substring","confidence":"high","grounded":"hana,merosu"},
    {"name_kana":"まい","len":2,"romaji":"Mai","containing_word_kana":"まいにち","containing_word_meaning":"every day","type":"substring","confidence":"high"},
    {"name_kana":"ちか","len":2,"romaji":"Chika","containing_word_kana":"ちかい","containing_word_meaning":"near","type":"substring","confidence":"high"},
    {"name_kana":"みな","len":2,"romaji":"Mina","containing_word_kana":"みなと","containing_word_meaning":"harbor","type":"substring","confidence":"high"},
    {"name_kana":"ゆい","len":2,"romaji":"Yui","containing_word_kana":"ゆいいつ","containing_word_meaning":"the only/sole","type":"substring","confidence":"high"},
    {"name_kana":"まこと","len":3,"romaji":"Makoto","containing_word_kana":"まことに","containing_word_meaning":"truly/indeed","type":"substring","confidence":"high"},
    {"name_kana":"さくら","len":3,"romaji":"Sakura","containing_word_kana":"さくらんぼ","containing_word_meaning":"cherry (fruit)","type":"substring","confidence":"high"},
    {"name_kana":"あきら","len":3,"romaji":"Akira","containing_word_kana":"あきらめる","containing_word_meaning":"to give up","type":"substring","confidence":"high"},
    {"name_kana":"あすか","len":3,"romaji":"Asuka","containing_word_kana":"あすから","containing_word_meaning":"from tomorrow","type":"substring","confidence":"high"},
    {"name_kana":"ひろし","len":3,"romaji":"Hiroshi","containing_word_kana":"ひろしま","containing_word_meaning":"Hiroshima","type":"substring","confidence":"high"},
    {"name_kana":"ひとみ","len":3,"romaji":"Hitomi","containing_word_kana":"ひとみしり","containing_word_meaning":"shyness with strangers","type":"substring","confidence":"high"},
    {"name_kana":"ちなみ","len":3,"romaji":"Chinami","containing_word_kana":"ちなみに","containing_word_meaning":"by the way/incidentally","type":"substring","confidence":"high"},
    {"name_kana":"あさひ","len":3,"romaji":"Asahi","containing_word_kana":"あさひ","containing_word_meaning":"morning sun","type":"homograph","confidence":"high","grounded":"neko,hana"},
    {"name_kana":"いずみ","len":3,"romaji":"Izumi","containing_word_kana":"いずみ","containing_word_meaning":"spring/fountain","type":"homograph","confidence":"high","grounded":"merosu"},
    {"name_kana":"ひかる","len":3,"romaji":"Hikaru","containing_word_kana":"ひかる","containing_word_meaning":"to shine","type":"homograph","confidence":"high"},
    {"name_kana":"かおり","len":3,"romaji":"Kaori","containing_word_kana":"かおり","containing_word_meaning":"fragrance/scent","type":"homograph","confidence":"high"},
    {"name_kana":"のぞみ","len":3,"romaji":"Nozomi","containing_word_kana":"のぞみ","containing_word_meaning":"wish/hope","type":"homograph","confidence":"high"},
    {"name_kana":"みなみ","len":3,"romaji":"Minami","containing_word_kana":"みなみ","containing_word_meaning":"south","type":"homograph","confidence":"high"},
    {"name_kana":"ひなた","len":3,"romaji":"Hinata","containing_word_kana":"ひなた","containing_word_meaning":"a sunny spot","type":"homograph","confidence":"high"},
    {"name_kana":"ひまわり","len":4,"romaji":"Himawari","containing_word_kana":"ひまわり","containing_word_meaning":"sunflower","type":"homograph","confidence":"high"},
    {"name_kana":"なでしこ","len":4,"romaji":"Nadeshiko","containing_word_kana":"やまとなでしこ","containing_word_meaning":"idealized Japanese woman/dianthus","type":"substring","confidence":"high"},
    {"name_kana":"すずらん","len":4,"romaji":"Suzuran","containing_word_kana":"すずらん","containing_word_meaning":"lily of the valley","type":"homograph","confidence":"high"},
    {"name_kana":"あじさい","len":4,"romaji":"Ajisai","containing_word_kana":"あじさい","containing_word_meaning":"hydrangea","type":"homograph","confidence":"high"},
    {"name_kana":"たんぽぽ","len":4,"romaji":"Tanpopo","containing_word_kana":"たんぽぽ","containing_word_meaning":"dandelion","type":"homograph","confidence":"high"},
    {"name_kana":"きさらぎ","len":4,"romaji":"Kisaragi","containing_word_kana":"きさらぎ","containing_word_meaning":"February (old lunar calendar)","type":"homograph","confidence":"med"},
    {"name_kana":"みなづき","len":4,"romaji":"Minazuki","containing_word_kana":"みなづき","containing_word_meaning":"June (old lunar calendar)","type":"homograph","confidence":"med"},
    {"name_kana":"ことのは","len":4,"romaji":"Kotonoha","containing_word_kana":"ことのは","containing_word_meaning":"words/language (poetic)","type":"homograph","confidence":"med"}
  ],
  "true_positive_contexts": [
    {"name_kana":"メロス","sentence_kana":"メロスは激怒した。","source":"corpus:merosu"},
    {"name_kana":"メロス","sentence_kana":"走れ！　メロス。","source":"corpus:merosu"},
    {"name_kana":"セリヌンティウス","sentence_kana":"竹馬の友、セリヌンティウスは、深夜、王城に召された。","source":"corpus:merosu"},
    {"name_kana":"ディオニス","sentence_kana":"暴君ディオニスは静かに、けれども威厳を以て問いつめた。","source":"corpus:merosu"},
    {"name_kana":"フィロストラトス","sentence_kana":"フィロストラトスでございます。","source":"corpus:merosu"},
    {"name_kana":"ゼウス","sentence_kana":"待ってくれ、ゼウスよ。","source":"corpus:merosu"},
    {"name_kana":"アレキス","sentence_kana":"それから、賢臣のアレキス様を。","source":"corpus:merosu"},
    {"name_kana":"シラクス","sentence_kana":"きょう未明メロスは村を出発し、野を越え山越え、十里はなれた此のシラクスの市にやって来た。","source":"corpus:merosu"},
    {"name_kana":"おさん","sentence_kana":"第一に逢ったのがおさんである。","source":"corpus:neko"},
    {"name_kana":"おさん","sentence_kana":"おさんは未だに嫌いである。","source":"corpus:neko"},
    {"name_kana":"リン","sentence_kana":"リンは今日も学校に遅刻した。","source":"constructed"},
    {"name_kana":"あい","sentence_kana":"あいちゃんは私の妹です。","source":"constructed"},
    {"name_kana":"まこと","sentence_kana":"まことは正直な男だ。","source":"constructed"},
    {"name_kana":"さくら","sentence_kana":"さくらは転校生と仲良くなった。","source":"constructed"},
    {"name_kana":"ひまわり","sentence_kana":"ひまわりは弟の名前です。","source":"constructed"}
  ]
}
