Triple

T9673211
Position Surface form Disambiguated ID Type / Status
Subject Sellafield E234080 entity
Predicate hasAccident P32122 FINISHED
Object Windscale fire
The Windscale fire was a major 1957 nuclear reactor accident in the UK, considered one of the worst nuclear disasters in British history and a key event in the development of nuclear safety regulations.
E813969 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: Windscale fire | Statement: [Sellafield, hasAccident, Windscale fire]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Windscale fire
Context triple: [Sellafield, hasAccident, Windscale fire]
  • A. Chernobyl disaster
    The Chernobyl disaster was a catastrophic 1986 nuclear power plant accident in Soviet-era Ukraine that released massive radioactive contamination across Europe and became one of the worst nuclear disasters in history.
  • B. NRX reactor accident of 1952
    The NRX reactor accident of 1952 was a major nuclear reactor incident in Canada involving a partial meltdown and significant radioactive release, making it one of the earliest serious accidents in nuclear power history.
  • C. Castle Bravo
    Castle Bravo was the United States’ first and most powerful dry-fuel thermonuclear (hydrogen) bomb test, conducted in 1954 and infamous for its unexpectedly massive yield and severe radioactive fallout.
  • D. bombing of Peenemünde
    The bombing of Peenemünde was a major World War II Royal Air Force raid targeting Germany’s V-weapon research and development site on the Baltic coast.
  • E. 1992 Windsor Castle fire
    The 1992 Windsor Castle fire was a major blaze that severely damaged parts of Windsor Castle, prompting one of the largest restoration projects in British royal history.
  • 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: Windscale fire
Triple: [Sellafield, hasAccident, Windscale fire]
Generated description
The Windscale fire was a major 1957 nuclear reactor accident in the UK, considered one of the worst nuclear disasters in British history and a key event in the development of nuclear safety regulations.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Windscale fire
Target entity description: The Windscale fire was a major 1957 nuclear reactor accident in the UK, considered one of the worst nuclear disasters in British history and a key event in the development of nuclear safety regulations.
  • A. Chernobyl disaster
    The Chernobyl disaster was a catastrophic 1986 nuclear power plant accident in Soviet-era Ukraine that released massive radioactive contamination across Europe and became one of the worst nuclear disasters in history.
  • B. NRX reactor accident of 1952
    The NRX reactor accident of 1952 was a major nuclear reactor incident in Canada involving a partial meltdown and significant radioactive release, making it one of the earliest serious accidents in nuclear power history.
  • C. Castle Bravo
    Castle Bravo was the United States’ first and most powerful dry-fuel thermonuclear (hydrogen) bomb test, conducted in 1954 and infamous for its unexpectedly massive yield and severe radioactive fallout.
  • D. bombing of Peenemünde
    The bombing of Peenemünde was a major World War II Royal Air Force raid targeting Germany’s V-weapon research and development site on the Baltic coast.
  • E. 1992 Windsor Castle fire
    The 1992 Windsor Castle fire was a major blaze that severely damaged parts of Windsor Castle, prompting one of the largest restoration projects in British royal history.
  • 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_69ca848f55e48190b3f67252571c3d45 completed March 30, 2026, 2:11 p.m.
NER Named-entity recognition batch_69cd9c6c05c481909885bfdb850e7527 completed April 1, 2026, 10:30 p.m.
NED1 Entity disambiguation (via context triple) batch_69d18a2d030c8190ada52e855bc9afc8 completed April 4, 2026, 10:01 p.m.
NEDg Description generation batch_69d18bf051448190aaa3a7198c23fd39 completed April 4, 2026, 10:08 p.m.
NED2 Entity disambiguation (via description) batch_69d18c8783f08190858681b51096fe56 completed April 4, 2026, 10:11 p.m.
Created at: March 30, 2026, 8:15 p.m.