Triple

T6154377
Position Surface form Disambiguated ID Type / Status
Subject Keio fare system E137282 entity
Predicate appliesTo P1129 FINISHED
Object Keio Keibajō Line
The Keio Keibajō Line is a short branch railway line in Tokyo, Japan, operated by Keio Corporation to serve the Tokyo Racecourse area.
 E808205 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
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: Keio Keibajō Line | Statement: [Keio fare system, appliesTo, Keio Keibajō Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Keio Keibajō Line
Context triple: [Keio fare system, appliesTo, Keio Keibajō Line]
  • A. Keio Line
    The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
  • B. Keio Sagamihara Line
    The Keio Sagamihara Line is a commuter railway line in the Tokyo metropolitan area operated by Keio Corporation, connecting suburban communities with central Tokyo.
  • C. Keio Inokashira Line
    The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
  • D. Seishin-Yamate Line
    The Seishin-Yamate Line is a major Kobe Municipal Subway line in Kobe, Japan, connecting central Kobe with its northern and western suburban areas.
  • E. Tōkyū Ōimachi Line
    The Tōkyū Ōimachi Line is a major commuter railway line in Tokyo operated by Tokyu Corporation, connecting central Tokyo areas such as Ōimachi and Futako-Tamagawa with surrounding residential districts.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Keio Keibajō Line
Triple: [Keio fare system, appliesTo, Keio Keibajō Line]
Generated description
The Keio Keibajō Line is a short branch railway line in Tokyo, Japan, operated by Keio Corporation to serve the Tokyo Racecourse area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Keio Keibajō Line
Target entity description: The Keio Keibajō Line is a short branch railway line in Tokyo, Japan, operated by Keio Corporation to serve the Tokyo Racecourse area.
  • A. Keio Line
    The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
  • B. Keio Sagamihara Line
    The Keio Sagamihara Line is a commuter railway line in the Tokyo metropolitan area operated by Keio Corporation, connecting suburban communities with central Tokyo.
  • C. Keio Inokashira Line
    The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
  • D. Seishin-Yamate Line
    The Seishin-Yamate Line is a major Kobe Municipal Subway line in Kobe, Japan, connecting central Kobe with its northern and western suburban areas.
  • E. Tōkyū Ōimachi Line
    The Tōkyū Ōimachi Line is a major commuter railway line in Tokyo operated by Tokyu Corporation, connecting central Tokyo areas such as Ōimachi and Futako-Tamagawa with surrounding residential districts.
  • F. None of above. chosen

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69c008a45d008190832a9e19f5d63406 completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c05cffc7bc819092633a9e5f1abe2f completed March 22, 2026, 9:20 p.m.
NED1 Entity disambiguation (via context triple) batch_69d160f6855c81909ae0f3f1c041f600 completed April 4, 2026, 7:05 p.m.
NEDg Description generation batch_69d161c432b08190ba848159cc26a00c completed April 4, 2026, 7:08 p.m.
NED2 Entity disambiguation (via description) batch_69d162fc597081909a57f842e41b1ad4 completed April 4, 2026, 7:14 p.m.
Created at: March 22, 2026, 4:17 p.m.