Triple

T12659266
Position Surface form Disambiguated ID Type / Status
Subject Tanagawa Line E302372 entity
Predicate connectsWith P37 FINISHED
Object Nankai Main Line E59425 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: Nankai Main Line | Statement: [Tanagawa Line, connectsWith, 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: [Tanagawa Line, connectsWith, 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. 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.
  • C. Nippō Main Line
    The Nippō Main Line is a major railway line in Kyushu, Japan, operated by JR Kyushu and running along the eastern coast to connect key cities including Beppu, Oita, and Miyazaki.
  • D. Saikyō Line
    The Saikyō Line is a major JR East railway line in the Tokyo metropolitan area that connects central Tokyo with Saitama Prefecture, serving as a key commuter route.
  • E. Nankai Koya Line
    The Nankai Koya Line is a major private railway line in the Osaka region of Japan operated by Nankai Electric Railway, connecting central Osaka with the Mount Koya area.
  • 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_69d7bded71a88190bb76e2413af9ea66 elicitation completed
NER batch_69d961636db8819099c438b24bcfd866 ner completed
NED1 batch_69fe249a972081909b30302865396eb1 ned_source_triple completed
Created at: April 9, 2026, 5:19 p.m.