Triple

T16028002
Position Surface form Disambiguated ID Type / Status
Subject 北の丸公園 E388767 entity
Predicate 別名 P39 FINISHED
Object 皇居外苑北の丸地区 E388767 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: 皇居外苑北の丸地区 | Statement: [北の丸公園, 別名, 皇居外苑北の丸地区]

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: 皇居外苑北の丸地区
Context triple: [北の丸公園, 別名, 皇居外苑北の丸地区]
  • A. Imperial Palace grounds
    The Imperial Palace grounds are an expansive, historic park-like area in central Tokyo that encompass the primary residence of Japan’s Emperor, surrounded by moats, gardens, and remnants of the former Edo Castle.
  • B. 北の丸公園 chosen
    北の丸公園は、東京都千代田区に位置し、皇居北側の旧江戸城北の丸跡地を整備した緑豊かな都市公園です。
  • C. Tokyo Imperial Palace grounds
    Tokyo Imperial Palace grounds are the expansive, historic estate in central Tokyo that serves as the main residence of Japan’s Emperor, featuring palaces, gardens, and moats on the former site of Edo Castle.
  • D. Meiji Jingu Gaien area
    The Meiji Jingu Gaien area is a prominent cultural and recreational district in Tokyo known for its tree-lined avenues, sports facilities, and seasonal attractions such as autumn foliage and ginkgo-lined streets.
  • E. Sakuragichō area
    The Sakuragichō area is a central waterfront district of Yokohama known for its major transit hub, modern high-rises, and proximity to attractions like Minato Mirai.
  • 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_69e183294984819080b8727a3511a21b ner completed
NED1 batch_69ffcf33c6a881909284933ea3b7dd6e ned_source_triple completed
Created at: April 10, 2026, 4:56 a.m.