Triple
T21568652
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Great Eastern suburban services |
E532226
|
entity |
| Predicate | typicalRollingStock |
P5426
|
FINISHED |
| Object | British Rail Class 307 |
—
|
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: British Rail Class 307 | Statement: [Great Eastern suburban services, typicalRollingStock, British Rail Class 307]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: British Rail Class 307 Context triple: [Great Eastern suburban services, typicalRollingStock, British Rail Class 307]
-
A.
British Rail Class 305
The British Rail Class 305 was an electric multiple unit train used primarily for suburban passenger services in the London area, especially on routes out of Liverpool Street.
-
B.
British Rail Class 306
The British Rail Class 306 was an early post-war electric multiple unit used on suburban commuter routes in the London area, notable for its 1,500 V DC overhead operation before later conversion to 25 kV AC.
-
C.
British Rail Class 302
The British Rail Class 302 was an electric multiple unit train built in the late 1950s for commuter services from London, particularly on routes out of Liverpool Street.
-
D.
British Rail Class 321
The British Rail Class 321 is a type of electric multiple unit train introduced in the late 1980s for commuter and regional services in the UK, widely used in East Anglia and other routes before being superseded by newer fleets.
-
E.
British Rail Class 323
The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
- 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: British Rail Class 307 Target entity description: The British Rail Class 307 was an electric multiple unit introduced in the 1950s for commuter services, primarily operating on suburban routes out of London Liverpool Street.
-
A.
British Rail Class 305
The British Rail Class 305 was an electric multiple unit train used primarily for suburban passenger services in the London area, especially on routes out of Liverpool Street.
-
B.
British Rail Class 306
The British Rail Class 306 was an early post-war electric multiple unit used on suburban commuter routes in the London area, notable for its 1,500 V DC overhead operation before later conversion to 25 kV AC.
-
C.
British Rail Class 302
The British Rail Class 302 was an electric multiple unit train built in the late 1950s for commuter services from London, particularly on routes out of Liverpool Street.
-
D.
British Rail Class 321
The British Rail Class 321 is a type of electric multiple unit train introduced in the late 1980s for commuter and regional services in the UK, widely used in East Anglia and other routes before being superseded by newer fleets.
-
E.
British Rail Class 323
The British Rail Class 323 is a type of electric multiple unit train widely used on suburban and commuter rail services in the West Midlands and North West England.
- F. None of above. chosen
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_69e0c460db088190828c64206a450273 |
completed | April 16, 2026, 11:13 a.m. |
| NER | Named-entity recognition | batch_69eee9cad95c8190ab165ced6f242302 |
completed | April 27, 2026, 4:44 a.m. |
Created at: April 16, 2026, 6:30 p.m.