Triple

T7958606
Position Surface form Disambiguated ID Type / Status
Subject Hibiya Park E184803 entity
Predicate ownedBy P347 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: [Hibiya Park, ownedBy, 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: [Hibiya Park, ownedBy, 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_69ca8293a2388190aace944d7ed9c0c0 elicitation completed
NER batch_69cb3b80050c81909b2db95ade495052 ner completed
NED1 batch_69cc565efef48190915892c5d8af852c ned_source_triple completed
Created at: March 30, 2026, 5:11 p.m.