Triple

T2528658
Position Surface form Disambiguated ID Type / Status
Subject Shinagawa, Tokyo, Japan E56100 entity
Predicate servedByRailwayCompany P782 FINISHED
Object Keikyu Corporation
Keikyu Corporation is a major private railway operator in the Greater Tokyo area, best known for its commuter and airport rail services connecting central Tokyo with Haneda Airport and the Miura Peninsula.
E277499 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: Keikyu Corporation | Statement: [Shinagawa, Tokyo, Japan, servedByRailwayCompany, Keikyu Corporation]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Keikyu Corporation
Context triple: [Shinagawa, Tokyo, Japan, servedByRailwayCompany, Keikyu Corporation]
  • A. Tokyu Corporation
    Tokyu Corporation is a major Japanese private railway and real estate company based in Tokyo, known for operating extensive rail networks and developing commercial and residential areas, particularly around Shibuya.
  • B. Keihan Group
    Keihan Group is a Japanese corporate conglomerate centered on the Keihan Electric Railway that operates transportation, real estate, retail, and leisure businesses in the Kansai region.
  • C. Keio Corporation
    Keio Corporation is a major Japanese private railway and transportation company operating rail lines and related services in the Tokyo metropolitan area.
  • D. Yoshimoto Kogyo
    Yoshimoto Kogyo is a major Japanese entertainment conglomerate best known for managing comedians and producing comedy shows, theater, television, and other media.
  • E. Kinki Sharyo
    Kinki Sharyo is a Japanese manufacturer specializing in the design and production of railway vehicles, including metro and light rail trains used in systems worldwide.
  • 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: Keikyu Corporation
Triple: [Shinagawa, Tokyo, Japan, servedByRailwayCompany, Keikyu Corporation]
Generated description
Keikyu Corporation is a major private railway operator in the Greater Tokyo area, best known for its commuter and airport rail services connecting central Tokyo with Haneda Airport and the Miura Peninsula.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Keikyu Corporation
Target entity description: Keikyu Corporation is a major private railway operator in the Greater Tokyo area, best known for its commuter and airport rail services connecting central Tokyo with Haneda Airport and the Miura Peninsula.
  • A. Tokyu Corporation
    Tokyu Corporation is a major Japanese private railway and real estate company based in Tokyo, known for operating extensive rail networks and developing commercial and residential areas, particularly around Shibuya.
  • B. Keihan Group
    Keihan Group is a Japanese corporate conglomerate centered on the Keihan Electric Railway that operates transportation, real estate, retail, and leisure businesses in the Kansai region.
  • C. Keio Corporation
    Keio Corporation is a major Japanese private railway and transportation company operating rail lines and related services in the Tokyo metropolitan area.
  • D. Yoshimoto Kogyo
    Yoshimoto Kogyo is a major Japanese entertainment conglomerate best known for managing comedians and producing comedy shows, theater, television, and other media.
  • E. Kinki Sharyo
    Kinki Sharyo is a Japanese manufacturer specializing in the design and production of railway vehicles, including metro and light rail trains used in systems worldwide.
  • 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_69ab4a48e4f081908f1218d244608659 completed March 6, 2026, 9:42 p.m.
NER Named-entity recognition batch_69abd83043708190929e033f6a6166a4 completed March 7, 2026, 7:48 a.m.
NED1 Entity disambiguation (via context triple) batch_69af5cf3c790819089b0d202e25e6ede completed March 9, 2026, 11:51 p.m.
NEDg Description generation batch_69af5f0609dc8190a4b99eb2668cd1ff completed March 10, 2026, midnight
NED2 Entity disambiguation (via description) batch_69af5f55643881909776d9334df63c1d completed March 10, 2026, 12:01 a.m.
Created at: March 6, 2026, 9:46 p.m.