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.