Triple
T17686059
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | First Great Western |
E440889
|
entity |
| Predicate | operatedRollingStockType |
P1305
|
FINISHED |
| Object | Class 57 locomotives |
E614016
|
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: Class 57 locomotives | Statement: [First Great Western, operatedRollingStockType, Class 57 locomotives]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Class 57 locomotives Context triple: [First Great Western, operatedRollingStockType, Class 57 locomotives]
-
A.
Class 57 diesel locomotive
chosen
The Class 57 diesel locomotive is a British mainline locomotive type, rebuilt from older Class 47s, widely used for both passenger and freight services including prestigious sleeper and charter trains.
-
B.
Class 67 locomotive
The Class 67 locomotive is a type of high-speed diesel-electric locomotive used on the British railway network for both passenger and freight services.
-
C.
Class 68 locomotive
The Class 68 locomotive is a modern British diesel-electric locomotive used for passenger and freight services, known for its high performance, reliability, and distinctive angular design.
-
D.
BR Class 47 diesel-electric locomotives
The BR Class 47 diesel-electric locomotives are a large and versatile class of British mainline diesel engines introduced in the 1960s, widely used across the UK rail network for both passenger and freight services.
-
E.
BR Class 40 diesel-electric locomotives
The BR Class 40 diesel-electric locomotives were early British mainline diesel engines introduced in the late 1950s, known for their distinctive design and long service on express and freight duties across the UK rail network.
- 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_69d8b9e940b081908b862bb0e6e89b0d |
completed | April 10, 2026, 8:50 a.m. |
| NER | Named-entity recognition | batch_69e47047d90c8190a172201f3de6db87 |
completed | April 19, 2026, 6:03 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a02232e1b4481908e8a89f2c1c244f1 |
completed | May 11, 2026, 6:42 p.m. |
Created at: April 10, 2026, 10:02 a.m.