Triple

T20647402
Position Surface form Disambiguated ID Type / Status
Subject Erewash Valley Line E507391 entity
Predicate usedByOperator P22525 FINISHED
Object East Midlands Railway — NE NERFINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: East Midlands Railway | Statement: [Erewash Valley Line, usedByOperator, East Midlands Railway]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: East Midlands Railway
Context triple: [Erewash Valley Line, usedByOperator, East Midlands Railway]
  • A. East Midlands Railway chosen
    East Midlands Railway is a British train operating company providing regional and intercity passenger rail services across the East Midlands and surrounding areas.
  • B. 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.
  • C. North Midland Railway
    The North Midland Railway was an early 19th-century British railway company that operated a key main line in the Midlands, later becoming part of the Midland Railway.
  • D. East Midlands rail network
    The East Midlands rail network is a regional railway system in central England that connects major cities and towns such as Nottingham, Derby, Leicester, and surrounding areas through passenger and freight services.
  • E. North Staffordshire Railway
    The North Staffordshire Railway was a historic British railway company serving the Staffordshire region, particularly around Stoke-on-Trent and the Potteries, before being absorbed into larger railway groupings.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69e0b4be702c8190a3d2410a881d310a elicitation completed
NER batch_69e6af1fbfa881908a5b9db143e362d0 ner completed
Created at: April 16, 2026, 11:43 a.m.