Triple

T21568708
Position Surface form Disambiguated ID Type / Status
Subject North West Trains E532227 entity
Predicate operatedRollingStockClass P67417 FINISHED
Object British Rail Class 31 — 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 31 | Statement: [North West Trains, operatedRollingStockClass, British Rail Class 31]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 31
Context triple: [North West Trains, operatedRollingStockClass, British Rail Class 31]
  • A. 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the late 1980s for commuter and regional services in the UK, widely used in East Anglia and other routes before being superseded by newer fleets.
  • B. British Rail Class 312
    The British Rail Class 312 was a type of electric multiple unit introduced in the 1970s for outer-suburban and commuter services on the British railway network, particularly in the Eastern Region.
  • C. 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.
  • D. British Rail Class 319
    The British Rail Class 319 is a dual-voltage electric multiple unit train introduced in the late 1980s for cross-London services, notably on the Thameslink route.
  • E. British Rail Class 307
    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.
  • 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 31
Target entity description: The British Rail Class 31 is a class of diesel-electric locomotives introduced in the late 1950s for mixed-traffic duties on the British railway network.
  • A. 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.
  • B. British Rail Class 312
    The British Rail Class 312 was a type of electric multiple unit introduced in the 1970s for outer-suburban and commuter services on the British railway network, particularly in the Eastern Region.
  • C. 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.
  • D. British Rail Class 319
    The British Rail Class 319 is a dual-voltage electric multiple unit train introduced in the late 1980s for cross-London services, notably on the Thameslink route.
  • E. British Rail Class 307
    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.
  • 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.