Triple

T22478727
Position Surface form Disambiguated ID Type / Status
Subject British Rail Class 156 E555702 entity
Predicate operator P179 FINISHED
Object West Midlands Trains (former use via London Northwestern Railway) — 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: West Midlands Trains (former use via London Northwestern Railway) | Statement: [British Rail Class 156, operator, West Midlands Trains (former use via London Northwestern Railway)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: West Midlands Trains (former use via London Northwestern Railway)
Context triple: [British Rail Class 156, operator, West Midlands Trains (former use via London Northwestern Railway)]
  • A. West Midlands Trains rolling stock
    West Midlands Trains rolling stock refers to the fleet of passenger trains operated by West Midlands Trains on services in the West Midlands and surrounding regions of England.
  • B. West Midlands Rail Executive
    West Midlands Rail Executive is a regional public body responsible for overseeing and improving rail services and infrastructure across the West Midlands area of England.
  • C. North West Trains
    North West Trains was a British train operating company that ran regional and commuter rail services in North West England following rail privatization in the mid-1990s.
  • D. Wessex Trains (past)
    Wessex Trains was a former British train operating company in the UK that provided regional and local passenger rail services in the West Country and surrounding areas until its services were absorbed into other franchises.
  • E. West Midlands Railway chosen
    West Midlands Railway is a British train operating company providing regional and commuter rail services across the West Midlands and surrounding areas of England.
  • 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_69e11e52c2048190952dc5df209b9bed completed April 16, 2026, 5:37 p.m.
NER Named-entity recognition batch_69f15be653bc8190a2e5c47e38228bfe completed April 29, 2026, 1:16 a.m.
Created at: April 16, 2026, 8:49 p.m.