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.