Triple
T21729637
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | London Waterloo suburban services |
E536370
|
entity |
| Predicate | typicalRollingStock |
P5426
|
FINISHED |
| Object | British Rail Class 450 Desiro |
—
|
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: British Rail Class 450 Desiro | Statement: [London Waterloo suburban services, typicalRollingStock, British Rail Class 450 Desiro]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: British Rail Class 450 Desiro Context triple: [London Waterloo suburban services, typicalRollingStock, British Rail Class 450 Desiro]
-
A.
British Rail Class 450
chosen
The British Rail Class 450 is a fleet of electric multiple unit commuter trains operated in southern England, particularly on suburban and regional services.
-
B.
British Rail Class 375
The British Rail Class 375 is a fleet of electric multiple-unit passenger trains operated by Southeastern on suburban and regional services in southeast England.
-
C.
British Rail Class 390
The British Rail Class 390 is a high-speed tilting electric multiple unit train used by Avanti West Coast on the West Coast Main Line in the United Kingdom.
-
D.
British Rail Class 350
The British Rail Class 350 is a family of electric multiple-unit passenger trains used for regional and intercity services on the UK rail network.
-
E.
British Rail Class 458
The British Rail Class 458 is a fleet of electric multiple-unit passenger trains used for suburban and regional services in the south of England, particularly around London.
- 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_69e0c46d3284819099a4f9d5a704eb95 |
completed | April 16, 2026, 11:13 a.m. |
| NER | Named-entity recognition | batch_69effd04c9648190922e8fa7c74ac1b5 |
completed | April 28, 2026, 12:19 a.m. |
Created at: April 16, 2026, 6:48 p.m.