Triple

T21331197
Position Surface form Disambiguated ID Type / Status
Subject Ueno-okachimachi Station E525902 entity
Predicate operator P179 FINISHED
Object Tokyo Metropolitan Bureau of Transportation — NE NERFINISHED

How this triple was built (2 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
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: Tokyo Metropolitan Bureau of Transportation | Statement: [Ueno-okachimachi Station, operator, Tokyo Metropolitan Bureau of Transportation]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tokyo Metropolitan Bureau of Transportation
Context triple: [Ueno-okachimachi Station, operator, Tokyo Metropolitan Bureau of Transportation]
  • A. Tokyo Metropolitan Bureau of Transportation chosen
    The Tokyo Metropolitan Bureau of Transportation is the local government agency that operates key public transit services in Tokyo, including subways, trams, and buses.
  • B. Tokyu Railways
    Tokyu Railways is a major private railway operator in the Greater Tokyo area of Japan, known for its extensive commuter rail network and integration with urban development projects.
  • C. Teito Rapid Transit Authority
    Teito Rapid Transit Authority was the former public operator of several Tokyo subway lines before its privatization and reorganization as Tokyo Metro.
  • D. Keihan Electric Railway Co., Ltd.
    Keihan Electric Railway Co., Ltd. is a major Japanese private railway operator serving the Osaka–Kyoto region, known for its extensive commuter rail network and related transportation and leisure businesses.
  • E. Tokyo Monorail Co., Ltd.
    Tokyo Monorail Co., Ltd. is a Japanese railway company that operates the monorail line connecting central Tokyo with Haneda Airport.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69e0b51b90788190a4dd823d962626da completed April 16, 2026, 10:08 a.m.
NER Named-entity recognition batch_69e7ab530a1c81909bb37c2a3407d9e6 completed April 21, 2026, 4:52 p.m.
Created at: April 16, 2026, 4:42 p.m.