Triple

T20330381
Position Surface form Disambiguated ID Type / Status
Subject Shin-Imamiya Station E492460 entity
Predicate railwayLine P848 FINISHED
Object Nankai Main Line — NE NERFINISHED

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: Nankai Main Line | Statement: [Shin-Imamiya Station, railwayLine, Nankai Main Line]

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: Nankai Main Line
Context triple: [Shin-Imamiya Station, railwayLine, Nankai Main Line]
  • A. Nankai Main Line chosen
    The Nankai Main Line is a major private railway line in the Osaka region of Japan, operated by Nankai Electric Railway and serving as a key commuter and airport access route.
  • B. Nankai Takashinohama Line
    The Nankai Takashinohama Line is a short commuter railway line in Osaka Prefecture, Japan, operated by Nankai Electric Railway and serving local passengers in the Sakai area.
  • C. Keihan Main Line
    The Keihan Main Line is a major Japanese railway line operated by Keihan Electric Railway, connecting Osaka and Kyoto and serving as a key commuter and intercity route in the Kansai region.
  • D. Nankai Hashimoto Line
    The Nankai Hashimoto Line is a regional railway line in Japan operated by Nankai Electric Railway, connecting suburban areas of Osaka Prefecture with Hashimoto in Wakayama Prefecture.
  • E. Nankai Wakayamakō Line
    The Nankai Wakayamakō Line is a railway line in Japan operated by Nankai Electric Railway that connects central Wakayama with the Wakayama Port area, providing access to ferry services and regional transport links.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69e0b4a1a09881908d97270d6971a25a elicitation completed
NER batch_69e677e6f5d08190bedf376bbb999ebc ner completed
Created at: April 16, 2026, 11:22 a.m.