Triple

T9296224
Position Surface form Disambiguated ID Type / Status
Subject Fukushima Daiichi Nuclear Power Plant E223644 entity
Predicate hydrogenExplosionsOccurredIn P87482 FINISHED
Object Unit 3 reactor building
The Unit 3 reactor building at the Fukushima Daiichi Nuclear Power Plant is one of the severely damaged reactor structures from the 2011 disaster, known for suffering a catastrophic explosion and major radioactive release.
E790333 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: Unit 3 reactor building | Statement: [Fukushima Daiichi Nuclear Power Plant, hydrogenExplosionsOccurredIn, Unit 3 reactor building]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Unit 3 reactor building
Context triple: [Fukushima Daiichi Nuclear Power Plant, hydrogenExplosionsOccurredIn, Unit 3 reactor building]
  • A. PM-3A nuclear reactor
    The PM-3A nuclear reactor was a small U.S. Navy-built nuclear power plant that supplied electricity and heat to McMurdo Station in Antarctica during the 1960s and early 1970s.
  • B. K Reactor
    K Reactor is a decommissioned nuclear production reactor at the Savannah River Site in South Carolina that was used primarily for producing weapons-grade materials during the Cold War.
  • C. Reactor No. 4
    Reactor No. 4 was the RBMK nuclear reactor at the Chernobyl Nuclear Power Plant whose catastrophic explosion in 1986 caused one of the worst nuclear disasters in history.
  • D. NRU reactor
    The NRU reactor was a Canadian research nuclear reactor at Chalk River Laboratories known for producing medical isotopes and supporting materials testing and reactor physics research.
  • E. Unit 3 (nuclear)
    Unit 3 (nuclear) is the decommissioned boiling water reactor unit of the Humboldt Bay Power Plant in California.
  • 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: Unit 3 reactor building
Triple: [Fukushima Daiichi Nuclear Power Plant, hydrogenExplosionsOccurredIn, Unit 3 reactor building]
Generated description
The Unit 3 reactor building at the Fukushima Daiichi Nuclear Power Plant is one of the severely damaged reactor structures from the 2011 disaster, known for suffering a catastrophic explosion and major radioactive release.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Unit 3 reactor building
Target entity description: The Unit 3 reactor building at the Fukushima Daiichi Nuclear Power Plant is one of the severely damaged reactor structures from the 2011 disaster, known for suffering a catastrophic explosion and major radioactive release.
  • A. PM-3A nuclear reactor
    The PM-3A nuclear reactor was a small U.S. Navy-built nuclear power plant that supplied electricity and heat to McMurdo Station in Antarctica during the 1960s and early 1970s.
  • B. K Reactor
    K Reactor is a decommissioned nuclear production reactor at the Savannah River Site in South Carolina that was used primarily for producing weapons-grade materials during the Cold War.
  • C. Reactor No. 4
    Reactor No. 4 was the RBMK nuclear reactor at the Chernobyl Nuclear Power Plant whose catastrophic explosion in 1986 caused one of the worst nuclear disasters in history.
  • D. NRU reactor
    The NRU reactor was a Canadian research nuclear reactor at Chalk River Laboratories known for producing medical isotopes and supporting materials testing and reactor physics research.
  • E. Unit 3 (nuclear)
    Unit 3 (nuclear) is the decommissioned boiling water reactor unit of the Humboldt Bay Power Plant in California.
  • 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_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_69d0b248f99c8190a617b1d676799c75 completed April 4, 2026, 6:40 a.m.
NEDg Description generation batch_69d0b3f4bb6c819082d3f801ad88304f completed April 4, 2026, 6:47 a.m.
NED2 Entity disambiguation (via description) batch_69d0b4b8131c8190b2aa8be56925b7bc completed April 4, 2026, 6:50 a.m.
Created at: March 30, 2026, 7:36 p.m.