Triple

T13484229
Position Surface form Disambiguated ID Type / Status
Subject Harrow & Wealdstone E318451 entity
Predicate railAccident P34334 FINISHED
Object Harrow and Wealdstone rail crash E1042028 NE FINISHED

How this triple was built (3 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: Harrow and Wealdstone rail crash | Statement: [Harrow & Wealdstone, railAccident, Harrow and Wealdstone rail crash]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Harrow and Wealdstone rail crash
Context triple: [Harrow & Wealdstone, railAccident, Harrow and Wealdstone rail crash]
  • A. Harrow and Wealdstone rail crash chosen
    The Harrow and Wealdstone rail crash was a catastrophic 1952 railway accident in London involving multiple trains, resulting in one of the deadliest peacetime rail disasters in British history.
  • B. Ladbroke Grove rail crash
    The Ladbroke Grove rail crash was a major 1999 train collision near Paddington Station in London that resulted in 31 deaths, over 500 injuries, and significant scrutiny of UK rail safety and signaling practices.
  • C. Southall rail crash
    The Southall rail crash was a major 1997 high-speed train collision in West London that killed seven people, injured dozens, and raised serious concerns about railway safety and signal-passing procedures in the UK.
  • D. Shipton-on-Cherwell train crash
    The Shipton-on-Cherwell train crash was a major 1874 railway disaster in Oxfordshire, England, in which a derailment caused by a broken wheel led to numerous deaths and injuries and prompted significant improvements in railway safety.
  • E. Hatfield rail crash
    The Hatfield rail crash was a fatal 2000 train derailment in Hertfordshire, England, that exposed serious track maintenance failures and triggered major reforms in the UK rail industry.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
PD Predicate disambiguation gpt-5-mini-2025-08-07 
Target predicate: railAccident
Context triple: [Harrow & Wealdstone, railAccident, Harrow and Wealdstone rail crash]
  • A. accident
    Indicates an unintended, unforeseen event or mishap occurring, often resulting in damage, injury, or disruption.
  • B. resultOfAccident chosen
    Indicates that something exists or occurs as a consequence or outcome of an accident.
  • C. accidentType
    Indicates the specific category or kind of accident associated with an event or incident.
  • D. siteOfAccident
    Indicates the location where an accident occurred.
  • E. fatalAccident
    Indicates that an accident resulted in at least one death.
  • F. None of above.

Provenance (4 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_69d806b6bfec819089222715b2e86c8e completed April 9, 2026, 8:06 p.m.
NER Named-entity recognition batch_69dbaf3868ec8190a6a1803018d4f2d8 completed April 12, 2026, 2:42 p.m.
NED1 Entity disambiguation (via context triple) batch_69f75481b6f48190b6cd6cef3e8dee20 completed May 3, 2026, 1:58 p.m.
PD Predicate disambiguation batch_69dbae06061881909a6a6032e0507587 completed April 12, 2026, 2:36 p.m.
Created at: April 9, 2026, 9:42 p.m.