Triple

T9296370
Position Surface form Disambiguated ID Type / Status
Subject Tokyo Electric Power Company E223647 entity
Predicate subsidiary P258 FINISHED
Object TEPCO Fuel & Power, Inc.
TEPCO Fuel & Power, Inc. is an energy company that handles fuel procurement and thermal power generation operations within the Tokyo Electric Power Company (TEPCO) group.
E223647 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: TEPCO Fuel & Power, Inc. | Statement: [Tokyo Electric Power Company, subsidiary, TEPCO Fuel & Power, Inc.]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: TEPCO Fuel & Power, Inc.
Context triple: [Tokyo Electric Power Company, subsidiary, TEPCO Fuel & Power, Inc.]
  • A. 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.
  • B. 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.
  • C. 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.
  • D. Nippon Electric Company
    Nippon Electric Company, now known as NEC Corporation, is a major Japanese multinational provider of information technology and electronics solutions.
  • E. Engie
    Engie is a major French multinational utility company specializing in electricity, natural gas, and energy services, with a strong focus on renewable and low-carbon energy solutions.
  • 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: TEPCO Fuel & Power, Inc.
Triple: [Tokyo Electric Power Company, subsidiary, TEPCO Fuel & Power, Inc.]
Generated description
TEPCO Fuel & Power, Inc. is an energy company that handles fuel procurement and thermal power generation operations within the Tokyo Electric Power Company (TEPCO) group.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: TEPCO Fuel & Power, Inc.
Target entity description: TEPCO Fuel & Power, Inc. is an energy company that handles fuel procurement and thermal power generation operations within the Tokyo Electric Power Company (TEPCO) group.
  • A. Tokyo Electric Power Company chosen
    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.
  • B. 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.
  • C. 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.
  • D. Nippon Electric Company
    Nippon Electric Company, now known as NEC Corporation, is a major Japanese multinational provider of information technology and electronics solutions.
  • E. Engie
    Engie is a major French multinational utility company specializing in electricity, natural gas, and energy services, with a strong focus on renewable and low-carbon energy solutions.
  • F. None of above.

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_69ca8423edb08190bc0c91287a484768 completed March 30, 2026, 2:09 p.m.
NER Named-entity recognition batch_69cd089c9c588190967404c9eb938dfb completed April 1, 2026, 11:59 a.m.
NED1 Entity disambiguation (via context triple) batch_69d14bcc15508190b54acd74d4d7c911 completed April 4, 2026, 5:35 p.m.
NEDg Description generation batch_69d14ca535588190aa2ff77f0658226b completed April 4, 2026, 5:38 p.m.
NED2 Entity disambiguation (via description) batch_69d14d29d32c8190a8615b3450492abc completed April 4, 2026, 5:40 p.m.
Created at: March 30, 2026, 7:36 p.m.