Triple
T9324589
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Ladbroke Grove rail crash |
E224355
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object | First Great Western |
E440889
|
NE FINISHED |
How this triple was built (2 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: First Great Western | Statement: [Ladbroke Grove rail crash, operator, First Great Western]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: First Great Western Context triple: [Ladbroke Grove rail crash, operator, First Great Western]
-
A.
First Great Western
chosen
First Great Western was a major British train operating company that ran intercity and regional passenger services in western and southwestern England and South Wales before being rebranded as Great Western Railway.
-
B.
Great Eastern Main Line
The Great Eastern Main Line is a major railway route in England connecting London with key towns and cities in Essex, Suffolk, and Norfolk.
-
C.
Great Central Railway
The Great Central Railway was a major British railway company that operated routes in northern England and the Midlands before being absorbed into the London and North Eastern Railway in 1923.
-
D.
West Coast Main Line
The West Coast Main Line is one of the United Kingdom’s primary intercity railway routes, linking London with major cities such as Birmingham, Manchester, Liverpool, and Glasgow.
-
E.
Wessex Main Line
The Wessex Main Line is a key railway route in southern England linking Bristol and Bath with Salisbury and Southampton, serving as an important regional passenger corridor.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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. |
Created at: March 30, 2026, 7:38 p.m.