Triple

T20316111
Position Surface form Disambiguated ID Type / Status
Subject British Rail Mark 1 coaching stock E510383 entity
Predicate formedBackboneOf P2565 FINISHED
Object British Rail post-war passenger fleet — NE NERFINISHED

How this triple was built (2 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 post-war passenger fleet | Statement: [British Rail Mark 1 coaching stock, formedBackboneOf, British Rail post-war passenger fleet]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: British Rail post-war passenger fleet
Context triple: [British Rail Mark 1 coaching stock, formedBackboneOf, British Rail post-war passenger fleet]
  • A. British Rail Mark 1 coaching stock chosen
    British Rail Mark 1 coaching stock was a standardised generation of passenger railway carriages introduced in the 1950s that formed the backbone of British Rail’s post-war fleet.
  • B. British Rail Mark 3 coaching stock
    The British Rail Mark 3 coaching stock is a high-speed, air-conditioned passenger carriage design introduced in the 1970s that became a mainstay of intercity rail services in the UK.
  • C. British Rail electric multiple units
    British Rail electric multiple units are self-propelled electric passenger train sets used across the British railway network, typically formed of multiple carriages that can be coupled and operated together.
  • D. British Rail steam locomotives
    British Rail steam locomotives were the steam-powered engines operated on Britain’s nationalized railway system in the mid-20th century, spanning a wide range of classes used for passenger and freight services before diesel and electric traction took over.
  • E. British Rail Mark 2 sleeping coaches
    British Rail Mark 2 sleeping coaches were mid-20th-century British railway carriages designed to provide overnight sleeping accommodation on long-distance services across the UK rail network.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

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_69e0b4c7491c8190961113c4283b10b0 completed April 16, 2026, 10:07 a.m.
NER Named-entity recognition batch_69e67787af188190bc32a3049c9c5b39 completed April 20, 2026, 6:59 p.m.
Created at: April 16, 2026, 11:19 a.m.