Triple
T22239229
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | British Rail Class 150 |
E549675
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object | West Midlands Railway |
—
|
NE NERFINISHED |
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: West Midlands Railway | Statement: [British Rail Class 150, operator, West Midlands Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: West Midlands Railway Context triple: [British Rail Class 150, operator, West Midlands Railway]
-
A.
West Midlands Railway
chosen
West Midlands Railway is a British train operating company providing regional and commuter rail services across the West Midlands and surrounding areas of England.
-
B.
East Midlands Railway
East Midlands Railway is a British train operating company providing regional and intercity passenger rail services across the East Midlands and surrounding areas.
-
C.
West Midlands Rail Executive
West Midlands Rail Executive is a regional public body responsible for overseeing and improving rail services and infrastructure across the West Midlands area of England.
-
D.
London Midland
London Midland was a former British train operating company that ran regional and intercity passenger services across the West Midlands and surrounding areas until its franchise ended in 2017.
-
E.
West Midlands rail network
The West Midlands rail network is a regional railway system in central England that connects major cities and towns such as Birmingham, Wolverhampton, and Coventry through a range of suburban, regional, and intercity services.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e11e4102b881909cf47d3768e25c19 |
completed | April 16, 2026, 5:37 p.m. |
| NER | Named-entity recognition | batch_69f132123a048190ba5a90d7acb9aeb2 |
completed | April 28, 2026, 10:17 p.m. |
Created at: April 16, 2026, 8:38 p.m.