Triple

T22712655
Position Surface form Disambiguated ID Type / Status
Subject West Midlands Trains rolling stock E561641 entity
Predicate replacedOperatorRollingStockOf P14642 FINISHED
Object London Midland 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: London Midland | Statement: [West Midlands Trains rolling stock, replacedOperatorRollingStockOf, London Midland]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: London Midland
Context triple: [West Midlands Trains rolling stock, replacedOperatorRollingStockOf, London Midland]
  • A. London Midland chosen
    London Midland was a former British train operating company that ran regional and intercity passenger services across the West Midlands and surrounding areas until its franchise ended in 2017.
  • B. London Midland Region
    The London Midland Region was a major administrative division of British Railways responsible for rail services across central and north-western England and parts of Scotland after nationalisation in 1948.
  • C. West Midlands Railway
    West Midlands Railway is a British train operating company providing regional and commuter rail services across the West Midlands and surrounding areas of England.
  • D. Northern Rail
    Northern Rail is a British train operating company providing regional and commuter rail services across Northern England.
  • E. London and North Eastern Railway
    London and North Eastern Railway was a major British railway company formed in 1923, known for operating key routes in eastern and northeastern England and for famous express trains like the Flying Scotsman and Mallard.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: replacedOperatorRollingStockOf
Context triple: [West Midlands Trains rolling stock, replacedOperatorRollingStockOf, London Midland]
  • A. replacedRollingStock chosen
    Indicates that one rolling stock asset has been substituted or superseded by another in service or operational use.
  • B. formerRollingStock
    Indicates that an entity was previously used as rolling stock (e.g., railway vehicles) but no longer serves in that capacity.
  • C. rollingStockOperator
    Indicates that an entity operates or manages rolling stock, such as trains or rail vehicles, in a railway system.
  • D. relatedRollingStock
    Indicates a relationship between pieces of rolling stock that are associated with each other, such as through shared operations, configurations, or functional linkage.
  • E. operatedRollingStockClass
    Indicates that an entity (such as a company or operator) has operated a specific class or type of rolling stock (e.g., trains or rail vehicles).
  • F. None of above.

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_69e2454f1348819088d83f420925a5c1 completed April 17, 2026, 2:35 p.m.
NER Named-entity recognition batch_69f1790ab6208190a342f076002324ab completed April 29, 2026, 3:20 a.m.
PD Predicate disambiguation batch_69ee62bd657c81909f7b01245b080a5f completed April 26, 2026, 7:08 p.m.
Created at: April 17, 2026, 3:18 p.m.