Triple
T1999928
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Railtrack |
E43444
|
entity |
| Predicate | associatedWith |
P37
|
FINISHED |
| Object |
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.
|
E224355
|
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: Ladbroke Grove rail crash | Statement: [Railtrack, associatedWith, Ladbroke Grove rail crash]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Ladbroke Grove rail crash Context triple: [Railtrack, associatedWith, Ladbroke Grove 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.
Montparnasse derailment
The Montparnasse derailment was a famous 1895 train accident in Paris in which a locomotive overran the buffers at Gare Montparnasse and dramatically crashed through the station wall onto the street below.
-
C.
Great Locomotive Chase
The Great Locomotive Chase was a daring Civil War raid in 1862 in which Union soldiers stole a Confederate train in Georgia in an attempt to disrupt vital rail lines and supply routes.
-
D.
Tay Bridge disaster
The Tay Bridge disaster was a catastrophic 1879 railway bridge collapse in Scotland during a violent storm, killing dozens of passengers and prompting major changes in bridge engineering and safety standards.
-
E.
Munich air disaster
The Munich air disaster was a 1958 plane crash involving Manchester United’s “Busby Babes” that killed 23 people and became one of the most tragic and defining events in football 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: Ladbroke Grove rail crash Triple: [Railtrack, associatedWith, Ladbroke Grove rail crash]
Generated description
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.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Ladbroke Grove rail crash Target entity description: 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.
-
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.
Montparnasse derailment
The Montparnasse derailment was a famous 1895 train accident in Paris in which a locomotive overran the buffers at Gare Montparnasse and dramatically crashed through the station wall onto the street below.
-
C.
Great Locomotive Chase
The Great Locomotive Chase was a daring Civil War raid in 1862 in which Union soldiers stole a Confederate train in Georgia in an attempt to disrupt vital rail lines and supply routes.
-
D.
Tay Bridge disaster
The Tay Bridge disaster was a catastrophic 1879 railway bridge collapse in Scotland during a violent storm, killing dozens of passengers and prompting major changes in bridge engineering and safety standards.
-
E.
Munich air disaster
The Munich air disaster was a 1958 plane crash involving Manchester United’s “Busby Babes” that killed 23 people and became one of the most tragic and defining events in football 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_69a88715dbbc8190b2299e29e955d997 |
completed | March 4, 2026, 7:25 p.m. |
| NER | Named-entity recognition | batch_69abb87f78f0819098e787a5f3e062fd |
completed | March 7, 2026, 5:32 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae0ada17608190867681ee14aa217e |
completed | March 8, 2026, 11:48 p.m. |
| NEDg | Description generation | batch_69ae0b63b85c819096fc8ad12ace4d22 |
completed | March 8, 2026, 11:50 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69ae0bc55fcc8190bf117ef1328b8a76 |
completed | March 8, 2026, 11:52 p.m. |
Created at: March 4, 2026, 7:37 p.m.