Triple

T20121912
Position Surface form Disambiguated ID Type / Status
Subject Wakayama-shi Station E490629 entity
Predicate railwayNetwork P522 FINISHED
Object Nankai Electric Railway network — 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 Electric Railway network | Statement: [Wakayama-shi Station, railwayNetwork, Nankai Electric Railway network]

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 Electric Railway network
Context triple: [Wakayama-shi Station, railwayNetwork, Nankai Electric Railway network]
  • A. Keihan Electric Railway network
    The Keihan Electric Railway network is a private railway system in Japan that primarily connects the Osaka and Kyoto metropolitan areas, serving as a major commuter and intercity transport corridor in the Kansai region.
  • B. Nankai Electric Railway chosen
    Nankai Electric Railway is a major private railway company in Japan’s Kansai region, operating key commuter and interurban lines connecting Osaka with Wakayama and Kansai International Airport.
  • C. Kita-Osaka Kyuko Railway network
    The Kita-Osaka Kyuko Railway network is a private suburban railway system in northern Osaka Prefecture that functions as an extension of the Osaka Metro Midosuji Line, connecting central Osaka with its northern suburbs.
  • D. Nankai Cable Line
    The Nankai Cable Line is a short funicular railway in Osaka Prefecture, Japan, operated by Nankai Electric Railway to connect passengers to the Mount Kōya area.
  • E. Hanshin Mukogawa Line
    The Hanshin Mukogawa Line is a short commuter railway branch line in Hyōgo Prefecture, Japan, providing local transit service as part of the Hanshin Electric Railway network.
  • 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_69da62651a0c8190a3e05e95e056a66b elicitation completed
NER batch_69e6673f5b4c8190bf9fb5f4e6b6a452 ner completed
Created at: April 11, 2026, 11:30 p.m.