Triple
T22574990
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | London Marylebone – Banbury |
E544368
|
entity |
| Predicate | rollingStockUsedByMainOperator |
P148794
|
FINISHED |
| Object | Chiltern Railways diesel multiple units |
—
|
NE NERFINISHED |
How this triple was built (4 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: Chiltern Railways diesel multiple units | Statement: [London Marylebone – Banbury, rollingStockUsedByMainOperator, Chiltern Railways diesel multiple units]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chiltern Railways diesel multiple units Context triple: [London Marylebone – Banbury, rollingStockUsedByMainOperator, Chiltern Railways diesel multiple units]
-
A.
British Rail Class 119 DMU
The British Rail Class 119 DMU was a type of diesel multiple unit built in the late 1950s for suburban and cross-country passenger services on the Western Region of British Railways.
-
B.
British Rail Class 116 DMU
The British Rail Class 116 DMU is a type of first-generation diesel multiple unit built for suburban and commuter services on the British railway network in the late 1950s and 1960s.
-
C.
British Rail Class 114 DMU
The British Rail Class 114 DMU was a type of first-generation diesel multiple unit built for British Railways in the late 1950s for suburban and regional passenger services, particularly in the East Midlands.
-
D.
British Rail Class 117 DMU
The British Rail Class 117 DMU is a type of first-generation diesel multiple unit built for suburban and regional passenger services on British Rail from the late 1950s.
-
E.
British Rail Class 318 electric multiple units
The British Rail Class 318 electric multiple units are suburban EMU trains introduced in the mid-1980s for commuter services around Glasgow, Scotland, featuring steel-bodied construction and 25 kV AC overhead electrification.
- 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: Chiltern Railways diesel multiple units Target entity description: Chiltern Railways diesel multiple units are regional passenger trains operated by Chiltern Railways on non-electrified routes in the Chilterns and surrounding areas of England.
-
A.
British Rail Class 119 DMU
The British Rail Class 119 DMU was a type of diesel multiple unit built in the late 1950s for suburban and cross-country passenger services on the Western Region of British Railways.
-
B.
British Rail Class 116 DMU
The British Rail Class 116 DMU is a type of first-generation diesel multiple unit built for suburban and commuter services on the British railway network in the late 1950s and 1960s.
-
C.
British Rail Class 114 DMU
The British Rail Class 114 DMU was a type of first-generation diesel multiple unit built for British Railways in the late 1950s for suburban and regional passenger services, particularly in the East Midlands.
-
D.
British Rail Class 117 DMU
The British Rail Class 117 DMU is a type of first-generation diesel multiple unit built for suburban and regional passenger services on British Rail from the late 1950s.
-
E.
British Rail Class 318 electric multiple units
The British Rail Class 318 electric multiple units are suburban EMU trains introduced in the mid-1980s for commuter services around Glasgow, Scotland, featuring steel-bodied construction and 25 kV AC overhead electrification.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: rollingStockUsedByMainOperator Context triple: [London Marylebone – Banbury, rollingStockUsedByMainOperator, Chiltern Railways diesel multiple units]
-
A.
rollingStockOperator
Indicates that an entity operates or manages rolling stock, such as trains or rail vehicles, in a railway system.
-
B.
rollingStockType
Indicates the specific category or type of railway rolling stock associated with an entity (e.g., locomotive, passenger car, freight wagon).
-
C.
ownedRollingStock
Indicates that one entity possesses or has ownership rights over specific rolling stock (such as trains, railcars, or locomotives).
-
D.
rollingStockFamily
Indicates a relationship where a piece of rolling stock belongs to, or is classified under, a particular family or series of related rolling stock designs.
-
E.
rollingStockSupplier
Indicates that one entity supplies or provides rolling stock (such as railway vehicles) to another entity.
- F. None of above. chosen
Provenance (4 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_69e11e30d05481909df915354c89f0d6 |
completed | April 16, 2026, 5:36 p.m. |
| NER | Named-entity recognition | batch_69f15fec296481908a6101b02e5bedaa |
completed | April 29, 2026, 1:33 a.m. |
| PD | Predicate disambiguation | batch_69ee626e6bb08190ada4dd8b48cc0c43 |
completed | April 26, 2026, 7:07 p.m. |
| PDg | Predicate description generation | batch_69ee8841e9cc81908d23b34215e3be71 |
completed | April 26, 2026, 9:48 p.m. |
Created at: April 16, 2026, 8:53 p.m.