Triple

T15616335
Position Surface form Disambiguated ID Type / Status
Subject Chūkyō metropolitan area E375420 entity
Predicate containsHeadquartersOf P17490 FINISHED
Object Chubu Electric Power
Chubu Electric Power is a major Japanese electric utility company that supplies power primarily to the Chūbu region, including the Chūkyō metropolitan area.
E1165995 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: Chubu Electric Power | Statement: [Chūkyō metropolitan area, containsHeadquartersOf, Chubu Electric Power]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Chubu Electric Power
Context triple: [Chūkyō metropolitan area, containsHeadquartersOf, Chubu Electric Power]
  • A. Tohoku Electric Power (Yurtec)
    Tohoku Electric Power (Yurtec) is a major Japanese electric utility company serving the Tohoku region and acting as the naming sponsor for Yurtec Stadium Sendai.
  • B. Tokyo Electric Power Company
    Tokyo Electric Power Company is Japan’s largest electric utility, internationally known for operating the Fukushima Daiichi nuclear plant involved in the 2011 nuclear disaster.
  • C. Tokyo Gas and Electric Industrial Company
    Tokyo Gas and Electric Industrial Company was a Japanese industrial firm active in the early 20th century that played a foundational role in the country’s automotive industry, including establishing the company that became Hino Motors.
  • D. 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.
  • E. Eizan Electric Railway
    Eizan Electric Railway is a Japanese private railway company in Kyoto that operates scenic local train lines connecting the city to the northern mountainous and temple-rich areas.
  • 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: Chubu Electric Power
Triple: [Chūkyō metropolitan area, containsHeadquartersOf, Chubu Electric Power]
Generated description
Chubu Electric Power is a major Japanese electric utility company that supplies power primarily to the Chūbu region, including the Chūkyō metropolitan area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Chubu Electric Power
Target entity description: Chubu Electric Power is a major Japanese electric utility company that supplies power primarily to the Chūbu region, including the Chūkyō metropolitan area.
  • A. Tohoku Electric Power (Yurtec)
    Tohoku Electric Power (Yurtec) is a major Japanese electric utility company serving the Tohoku region and acting as the naming sponsor for Yurtec Stadium Sendai.
  • B. Tokyo Electric Power Company
    Tokyo Electric Power Company is Japan’s largest electric utility, internationally known for operating the Fukushima Daiichi nuclear plant involved in the 2011 nuclear disaster.
  • C. Tokyo Gas and Electric Industrial Company
    Tokyo Gas and Electric Industrial Company was a Japanese industrial firm active in the early 20th century that played a foundational role in the country’s automotive industry, including establishing the company that became Hino Motors.
  • D. 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.
  • E. Eizan Electric Railway
    Eizan Electric Railway is a Japanese private railway company in Kyoto that operates scenic local train lines connecting the city to the northern mountainous and temple-rich areas.
  • 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_69d85ccf2794819096cda4cbcb02d478 completed April 10, 2026, 2:13 a.m.
NER Named-entity recognition batch_69e04e980b748190b43c0b650bf1e629 completed April 16, 2026, 2:51 a.m.
NED1 Entity disambiguation (via context triple) batch_69ff56dd1e4c819090bf3cd4425b39b7 completed May 9, 2026, 3:46 p.m.
NEDg Description generation batch_69ff577e0ed08190a8f10f9e57c0e967 completed May 9, 2026, 3:49 p.m.
NED2 Entity disambiguation (via description) batch_69ff584b7b28819096fd2fad58ca32d6 completed May 9, 2026, 3:52 p.m.
Created at: April 10, 2026, 4:13 a.m.