Triple

T9709445
Position Surface form Disambiguated ID Type / Status
Subject Fukushima Daiichi Unit 4 E234984 entity
Predicate operator P179 FINISHED
Object Tokyo Electric Power Company E223647 NE FINISHED

How this triple was built (2 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: Tokyo Electric Power Company | Statement: [Fukushima Daiichi Unit 4, operator, Tokyo Electric Power Company]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tokyo Electric Power Company
Context triple: [Fukushima Daiichi Unit 4, operator, Tokyo Electric Power Company]
  • 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. 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.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69ca84cd8fa0819090a5e243ceb37003 completed March 30, 2026, 2:12 p.m.
NER Named-entity recognition batch_69cd9da7c6188190b086f7e411378268 completed April 1, 2026, 10:35 p.m.
NED1 Entity disambiguation (via context triple) batch_69d19f8476e08190865700679069dee6 completed April 4, 2026, 11:32 p.m.
Created at: March 30, 2026, 8:19 p.m.