Triple

T9324606
Position Surface form Disambiguated ID Type / Status
Subject Ladbroke Grove rail crash E224355 entity
Predicate relatedTo P37 FINISHED
Object 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.
E790825 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: Southall rail crash | Statement: [Ladbroke Grove rail crash, relatedTo, Southall rail crash]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Southall rail crash
Context triple: [Ladbroke Grove rail crash, relatedTo, Southall rail crash]
  • 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. 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. 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.
  • D. Piccadilly Incident
    Piccadilly Incident is a 1946 British romantic drama film starring Michael Wilding and Anna Neagle, centered on a wartime love story complicated by loss and mistaken death.
  • E. Soham rail disaster
    The Soham rail disaster was a 1944 World War II incident in Cambridgeshire, England, in which a burning ammunition train was heroically brought to a halt before exploding, saving the town from catastrophic destruction.
  • 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: Southall rail crash
Triple: [Ladbroke Grove rail crash, relatedTo, Southall rail crash]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Southall rail crash
Target entity description: 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.
  • 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. 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. 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.
  • D. Piccadilly Incident
    Piccadilly Incident is a 1946 British romantic drama film starring Michael Wilding and Anna Neagle, centered on a wartime love story complicated by loss and mistaken death.
  • E. Soham rail disaster
    The Soham rail disaster was a 1944 World War II incident in Cambridgeshire, England, in which a burning ammunition train was heroically brought to a halt before exploding, saving the town from catastrophic destruction.
  • 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_69ca8426d48481909596360f7791c7dd completed March 30, 2026, 2:09 p.m.
NER Named-entity recognition batch_69cd36f5c41c81908104c5b30e14827e completed April 1, 2026, 3:17 p.m.
NED1 Entity disambiguation (via context triple) batch_69d0c7e13d108190bc3409cf5608d9ad completed April 4, 2026, 8:12 a.m.
NEDg Description generation batch_69d0c8c715488190869d77411a14502b completed April 4, 2026, 8:16 a.m.
NED2 Entity disambiguation (via description) batch_69d0c9938ad8819094196104f7ac03bf completed April 4, 2026, 8:19 a.m.
Created at: March 30, 2026, 7:38 p.m.