Triple

T16028007
Position Surface form Disambiguated ID Type / Status
Subject 北の丸公園 E388767 entity
Predicate アクセス手段 P5872 FINISHED
Object 都営新宿線 E1091528 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: 都営新宿線 | Statement: [北の丸公園, アクセス手段, 都営新宿線]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: 都営新宿線
Context triple: [北の丸公園, アクセス手段, 都営新宿線]
  • A. 都営新宿線 chosen
    都営新宿線 is a major Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running east–west across the city and connecting central Tokyo with its eastern suburbs.
  • B. 都営地下鉄大江戸線
    都営地下鉄大江戸線は、東京都交通局が運行する東京都内を環状・放射状に結ぶ地下鉄路線です。
  • C. Tokyu Setagaya Line
    The Tokyu Setagaya Line is a light rail/tram line in Tokyo, Japan, operated by Tokyu Corporation and known for connecting Sangen-Jaya with the Setagaya area along a short, mostly street-level route.
  • D. Seibu Yurakucho Line
    The Seibu Yurakucho Line is a commuter railway line in Tokyo operated by Seibu Railway, linking the Seibu Ikebukuro Line with central Tokyo subway networks.
  • E. Tokyu Meguro Line
    The Tokyu Meguro Line is a commuter railway line in Tokyo and Kanagawa operated by Tokyu Corporation, linking central Tokyo with its southwestern suburbs and offering through services onto various subway and other private railway lines.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69d86dada3808190825d5f80d72fbe88 elicitation completed
NER batch_69e21a00f6808190a60939ef7ce727a7 ner completed
NED1 batch_69ffcf33c6a881909284933ea3b7dd6e ned_source_triple completed
Created at: April 10, 2026, 4:56 a.m.