Triple
T1979336
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Fukushima Daiichi nuclear disaster |
E42988
|
entity |
| Predicate | affectedReactor |
P3674
|
FINISHED |
| Object |
Fukushima Daiichi Unit 4
Fukushima Daiichi Unit 4 is one of the reactors at Japan’s Fukushima Daiichi Nuclear Power Plant that suffered severe damage and a spent fuel pool crisis following the 2011 earthquake and tsunami.
|
E234984
|
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: Fukushima Daiichi Unit 4 | Statement: [Fukushima Daiichi nuclear disaster, affectedReactor, Fukushima Daiichi Unit 4]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Fukushima Daiichi Unit 4 Context triple: [Fukushima Daiichi nuclear disaster, affectedReactor, Fukushima Daiichi Unit 4]
-
A.
Fukushima Daiichi Unit 3
Fukushima Daiichi Unit 3 is one of the damaged reactors at Japan’s Fukushima Daiichi Nuclear Power Plant, known for suffering a hydrogen explosion and core meltdown during the 2011 nuclear disaster.
-
B.
Fukushima Daiichi Unit 2
Fukushima Daiichi Unit 2 is one of the damaged reactors at Japan’s Fukushima Daiichi Nuclear Power Plant that suffered a core meltdown and severe structural failures following the 2011 earthquake and tsunami.
-
C.
Fukushima Daiichi Nuclear Power Plant
Fukushima Daiichi Nuclear Power Plant is a coastal Japanese nuclear power station in Ōkuma, Fukushima Prefecture, widely known as the site of the 2011 reactor meltdowns following a massive earthquake and tsunami.
-
D.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
-
E.
K-West Reactor
K-West Reactor is one of the plutonium production reactors at the Hanford Site in Washington State, historically used to support the U.S. nuclear weapons program.
- 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: Fukushima Daiichi Unit 4 Triple: [Fukushima Daiichi nuclear disaster, affectedReactor, Fukushima Daiichi Unit 4]
Generated description
Fukushima Daiichi Unit 4 is one of the reactors at Japan’s Fukushima Daiichi Nuclear Power Plant that suffered severe damage and a spent fuel pool crisis following the 2011 earthquake and tsunami.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Fukushima Daiichi Unit 4 Target entity description: Fukushima Daiichi Unit 4 is one of the reactors at Japan’s Fukushima Daiichi Nuclear Power Plant that suffered severe damage and a spent fuel pool crisis following the 2011 earthquake and tsunami.
-
A.
Fukushima Daiichi Unit 3
Fukushima Daiichi Unit 3 is one of the damaged reactors at Japan’s Fukushima Daiichi Nuclear Power Plant, known for suffering a hydrogen explosion and core meltdown during the 2011 nuclear disaster.
-
B.
Fukushima Daiichi Unit 2
Fukushima Daiichi Unit 2 is one of the damaged reactors at Japan’s Fukushima Daiichi Nuclear Power Plant that suffered a core meltdown and severe structural failures following the 2011 earthquake and tsunami.
-
C.
Fukushima Daiichi Nuclear Power Plant
Fukushima Daiichi Nuclear Power Plant is a coastal Japanese nuclear power station in Ōkuma, Fukushima Prefecture, widely known as the site of the 2011 reactor meltdowns following a massive earthquake and tsunami.
-
D.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
-
E.
K-West Reactor
K-West Reactor is one of the plutonium production reactors at the Hanford Site in Washington State, historically used to support the U.S. nuclear weapons program.
- 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_69a8871289048190b00b0d7744b7b2b1 |
completed | March 4, 2026, 7:25 p.m. |
| NER | Named-entity recognition | batch_69abbdbe35688190ab99620859e071c6 |
completed | March 7, 2026, 5:55 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae30467f2c8190adc3e619396c0f08 |
completed | March 9, 2026, 2:28 a.m. |
| NEDg | Description generation | batch_69ae31722f0081908a4d9d0760af375e |
completed | March 9, 2026, 2:33 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ae3209e46c81909055a1ee4fccd74d |
completed | March 9, 2026, 2:35 a.m. |
Created at: March 4, 2026, 7:36 p.m.