Triple
T17686057
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | First Great Western |
E440889
|
entity |
| Predicate | operatedRollingStockType |
P1305
|
FINISHED |
| Object | Class 166 |
—
|
NE NERFINISHED |
How this triple was built (3 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 166 | Statement: [First Great Western, operatedRollingStockType, Class 166]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Class 166 Context triple: [First Great Western, operatedRollingStockType, Class 166]
-
A.
Class 153
Class 153 is a type of British single-car diesel multiple unit train used primarily for regional and local passenger services.
-
B.
Class 158
Class 158 is a British diesel multiple unit train widely used on regional and intercity services, known for its higher comfort and speed compared to older provincial stock.
-
C.
Class 321
Class 321 is a type of British electric multiple unit train widely used for suburban and commuter rail services in the UK.
-
D.
Class 165/1
Class 165/1 is a subseries of British diesel multiple-unit commuter trains designed for regional and suburban passenger services in the UK.
-
E.
Class 68
Class 68 is a modern British diesel-electric locomotive class used for both passenger and freight services on the UK rail network.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Class 166 Target entity description: Class 166 is a British diesel multiple-unit train class introduced in the 1990s for regional and commuter services, particularly in the Thames Valley and surrounding areas.
-
A.
Class 153
Class 153 is a type of British single-car diesel multiple unit train used primarily for regional and local passenger services.
-
B.
Class 158
Class 158 is a British diesel multiple unit train widely used on regional and intercity services, known for its higher comfort and speed compared to older provincial stock.
-
C.
Class 321
Class 321 is a type of British electric multiple unit train widely used for suburban and commuter rail services in the UK.
-
D.
Class 165/1
chosen
Class 165/1 is a subseries of British diesel multiple-unit commuter trains designed for regional and suburban passenger services in the UK.
-
E.
Class 68
Class 68 is a modern British diesel-electric locomotive class used for both passenger and freight services on the UK rail network.
- F. None of above.
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_69d8b9e940b081908b862bb0e6e89b0d |
completed | April 10, 2026, 8:50 a.m. |
| NER | Named-entity recognition | batch_69e47047d90c8190a172201f3de6db87 |
completed | April 19, 2026, 6:03 a.m. |
Created at: April 10, 2026, 10:02 a.m.