Triple

T6154411
Position Surface form Disambiguated ID Type / Status
Subject Keio fare system E137282 entity
Predicate managingOrganization P86 FINISHED
Object Keio Corporation Railway Division
Keio Corporation Railway Division is the rail transport arm of Keio Corporation, operating commuter and interurban railway lines in the Tokyo metropolitan area.
 E626140 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 Corporation Railway Division | Statement: [Keio fare system, managingOrganization, Keio Corporation Railway Division]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Keio Corporation Railway Division
Context triple: [Keio fare system, managingOrganization, Keio Corporation Railway Division]
  • A. Keihan Electric Railway Co., Ltd.
    Keihan Electric Railway Co., Ltd. is a major Japanese private railway operator serving the Osaka–Kyoto region, known for its extensive commuter rail network and related transportation and leisure businesses.
  • B. Meguro-Kamata Electric Railway Company
    Meguro-Kamata Electric Railway Company was the original railway operator that later evolved into Tokyu Corporation, a major private railway and transportation conglomerate in the Tokyo area.
  • C. Sanyo Electric Railway
    Sanyo Electric Railway is a Japanese private railway company operating commuter rail services primarily in Hyōgo Prefecture, including routes that interconnect with other major regional rail networks.
  • D. Odakyu Electric Railway
    Odakyu Electric Railway is a major private railway company in Japan that operates commuter and limited express train services connecting central Tokyo with surrounding suburban and regional areas.
  • E. Tokyu Railways
    Tokyu Railways is a major private railway operator in the Greater Tokyo area of Japan, known for its extensive commuter rail network and integration with urban development projects.
  • 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 Corporation Railway Division
Triple: [Keio fare system, managingOrganization, Keio Corporation Railway Division]
Generated description
Keio Corporation Railway Division is the rail transport arm of Keio Corporation, operating commuter and interurban railway lines in the Tokyo metropolitan area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Keio Corporation Railway Division
Target entity description: Keio Corporation Railway Division is the rail transport arm of Keio Corporation, operating commuter and interurban railway lines in the Tokyo metropolitan area.
  • A. Keihan Electric Railway Co., Ltd.
    Keihan Electric Railway Co., Ltd. is a major Japanese private railway operator serving the Osaka–Kyoto region, known for its extensive commuter rail network and related transportation and leisure businesses.
  • B. Meguro-Kamata Electric Railway Company
    Meguro-Kamata Electric Railway Company was the original railway operator that later evolved into Tokyu Corporation, a major private railway and transportation conglomerate in the Tokyo area.
  • C. Sanyo Electric Railway
    Sanyo Electric Railway is a Japanese private railway company operating commuter rail services primarily in Hyōgo Prefecture, including routes that interconnect with other major regional rail networks.
  • D. Odakyu Electric Railway
    Odakyu Electric Railway is a major private railway company in Japan that operates commuter and limited express train services connecting central Tokyo with surrounding suburban and regional areas.
  • E. Tokyu Railways
    Tokyu Railways is a major private railway operator in the Greater Tokyo area of Japan, known for its extensive commuter rail network and integration with urban development projects.
  • 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_69c7421871888190aab99c6c5f6c147d completed March 28, 2026, 2:51 a.m.
NEDg Description generation batch_69c742fdbd888190bc5b5ec5e2cbcd6a completed March 28, 2026, 2:54 a.m.
NED2 Entity disambiguation (via description) batch_69c7436b4aa08190aa5bb222c3c45fa9 completed March 28, 2026, 2:56 a.m.
Created at: March 22, 2026, 4:17 p.m.