Triple

T6662955
Position Surface form Disambiguated ID Type / Status
Subject Tokyo Metropolitan Assembly E151520 entity
Predicate parentOrganization P254 FINISHED
Object Tokyo Metropolitan Government E131331 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: Tokyo Metropolitan Government | Statement: [Tokyo Metropolitan Assembly, parentOrganization, Tokyo Metropolitan Government]

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: Tokyo Metropolitan Government
Context triple: [Tokyo Metropolitan Assembly, parentOrganization, Tokyo Metropolitan Government]
  • A. Tokyo Metropolitan Government chosen
    The Tokyo Metropolitan Government is the administrative body responsible for governing Tokyo’s 23 special wards and surrounding municipalities, overseeing regional policies, public services, and urban planning for Japan’s capital.
  • B. Chiba Prefectural Government
    Chiba Prefectural Government is the administrative authority of Chiba Prefecture in Japan, responsible for regional governance, public services, and economic development policies.
  • C. Tokyo Metropolitan Public Safety Commission
    The Tokyo Metropolitan Public Safety Commission is a civilian oversight body that supervises and ensures the accountability of the Tokyo Metropolitan Police Department.
  • D. Tokyo Metropolitan Assembly
    The Tokyo Metropolitan Assembly is the unicameral legislative body responsible for enacting ordinances, approving budgets, and overseeing the administration of the Tokyo Metropolis in Japan.
  • E. Yokohama City Government
    The Yokohama City Government is the municipal authority responsible for administering and providing public services for the city of Yokohama, one of Japan’s largest and most important port cities.
  • 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_69c687f5fac48190a09e4838d9c6b45d elicitation completed
NER batch_69c6b09a6fa88190ba8e454b9ad421a0 ner completed
NED1 batch_69c6ef0c1fc081909e37296958a04572 ned_source_triple completed
Created at: March 27, 2026, 2:02 p.m.