Triple

T14725688
Position Surface form Disambiguated ID Type / Status
Subject Charfield E345932 entity
Predicate knownFor P22 FINISHED
Object Charfield rail disaster
The Charfield rail disaster was a 1928 railway accident in Gloucestershire, England, in which an express train collided with a freight train and caught fire, killing 16 people and leaving two child victims famously unidentified.
E1115158 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: Charfield rail disaster | Statement: [Charfield, knownFor, Charfield rail disaster]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Charfield rail disaster
Context triple: [Charfield, knownFor, Charfield rail disaster]
  • A. 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.
  • B. Harrow and Wealdstone rail crash
    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.
  • C. 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.
  • 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. 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.
  • 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: Charfield rail disaster
Triple: [Charfield, knownFor, Charfield rail disaster]
Generated description
The Charfield rail disaster was a 1928 railway accident in Gloucestershire, England, in which an express train collided with a freight train and caught fire, killing 16 people and leaving two child victims famously unidentified.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Charfield rail disaster
Target entity description: The Charfield rail disaster was a 1928 railway accident in Gloucestershire, England, in which an express train collided with a freight train and caught fire, killing 16 people and leaving two child victims famously unidentified.
  • A. 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.
  • B. Harrow and Wealdstone rail crash
    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.
  • C. 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.
  • 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. 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.
  • 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_69d822e5911c8190ba589f957dbd9ba7 completed April 9, 2026, 10:06 p.m.
NER Named-entity recognition batch_69dec26013c8819090512f8b4df9cc87 completed April 14, 2026, 10:40 p.m.
NED1 Entity disambiguation (via context triple) batch_69fdf099eaf48190b89032b6ac769e67 completed May 8, 2026, 2:18 p.m.
NEDg Description generation batch_69fdf20f3f0c81909052226a1fb8f165 completed May 8, 2026, 2:24 p.m.
NED2 Entity disambiguation (via description) batch_69fdf30dab20819085589da4e869fb7e completed May 8, 2026, 2:28 p.m.
Created at: April 10, 2026, 1:29 a.m.