Triple

T9296369
Position Surface form Disambiguated ID Type / Status
Subject Tokyo Electric Power Company E223647 entity
Predicate subsidiary P258 FINISHED
Object TEPCO Power Grid, Inc.
TEPCO Power Grid, Inc. is the company responsible for operating and maintaining the electricity transmission and distribution network in the service area of Tokyo Electric Power Company in Japan.
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 Power Grid, Inc. | Statement: [Tokyo Electric Power Company, subsidiary, TEPCO Power Grid, Inc.]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: TEPCO Power Grid, Inc.
Context triple: [Tokyo Electric Power Company, subsidiary, TEPCO Power Grid, 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 Power Grid, Inc.
Triple: [Tokyo Electric Power Company, subsidiary, TEPCO Power Grid, Inc.]
Generated description
TEPCO Power Grid, Inc. is the company responsible for operating and maintaining the electricity transmission and distribution network in the service area of Tokyo Electric Power Company in Japan.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: TEPCO Power Grid, Inc.
Target entity description: TEPCO Power Grid, Inc. is the company responsible for operating and maintaining the electricity transmission and distribution network in the service area of Tokyo Electric Power Company in Japan.
  • 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_69d139bfc054819084b39c16b7bdb2be completed April 4, 2026, 4:18 p.m.
NEDg Description generation batch_69d13a8e79b081908d5b4dce125df678 completed April 4, 2026, 4:21 p.m.
NED2 Entity disambiguation (via description) batch_69d13b1d2cb481908cdcbeb1a6c81794 completed April 4, 2026, 4:23 p.m.
Created at: March 30, 2026, 7:36 p.m.