Triple

T20647416
Position Surface form Disambiguated ID Type / Status
Subject Erewash Valley Line E507391 entity
Predicate regionRailwayDivision P15232 FINISHED
Object Network Rail East Midlands Route — 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: Network Rail East Midlands Route | Statement: [Erewash Valley Line, regionRailwayDivision, Network Rail East Midlands Route]

Disambiguation candidates (3 decisions)

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: Network Rail East Midlands Route
Context triple: [Erewash Valley Line, regionRailwayDivision, Network Rail East Midlands Route]
  • A. Network Rail Route: London North Eastern and East Midlands
    Network Rail Route: London North Eastern and East Midlands is a major operational region of Network Rail covering key main lines and rail infrastructure across London, the East Midlands, and the north-eastern parts of England.
  • B. 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.
  • C. East Midlands Railway
    East Midlands Railway is a British train operating company providing regional and intercity passenger rail services across the East Midlands and surrounding areas.
  • D. Network Rail
    Network Rail is the owner and infrastructure manager of most of the railway network in Great Britain, responsible for tracks, signals, major stations, and related assets.
  • E. London North Western route
    The London North Western route was a key railway network in England operated by the London and North Western Railway, linking major industrial and commercial centers across the country.
  • 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: Network Rail East Midlands Route
Target entity description: Network Rail East Midlands Route is a regional operating division of Network Rail responsible for managing and maintaining railway infrastructure across the East Midlands area of England.
  • A. Network Rail Route: London North Eastern and East Midlands chosen
    Network Rail Route: London North Eastern and East Midlands is a major operational region of Network Rail covering key main lines and rail infrastructure across London, the East Midlands, and the north-eastern parts of England.
  • B. 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.
  • C. East Midlands Railway
    East Midlands Railway is a British train operating company providing regional and intercity passenger rail services across the East Midlands and surrounding areas.
  • D. Network Rail
    Network Rail is the owner and infrastructure manager of most of the railway network in Great Britain, responsible for tracks, signals, major stations, and related assets.
  • E. London North Western route
    The London North Western route was a key railway network in England operated by the London and North Western Railway, linking major industrial and commercial centers across the country.
  • F. None of above.
PD Predicate disambiguation gpt-5-mini-2025-08-07 
Target predicate: regionRailwayDivision
Context triple: [Erewash Valley Line, regionRailwayDivision, Network Rail East Midlands Route]
  • A. railwayDivision
    Indicates that one administrative railway division is responsible for, manages, or encompasses another railway unit, line, or area within a rail network.
  • B. railwayDivisionHeadquartersOf
    Indicates that one location serves as the administrative headquarters for a specified railway division.
  • C. regionDivision
    Indicates a hierarchical or organizational subdivision relationship where one region is partitioned into smaller constituent regions.
  • D. railroadSubdivision
    Indicates that one railroad line or territory is a designated subdivision (operational segment) of a larger railroad network.
  • E. railwayRegion chosen
    Indicates a relationship where a railway or rail network is associated with, located in, or administered within a particular geographic region.
  • F. None of above.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69e0b4be702c8190a3d2410a881d310a elicitation completed
NER batch_69e6af1fbfa881908a5b9db143e362d0 ner completed
PD batch_69e5c0315f5081908098707c6455e56e pd completed
Created at: April 16, 2026, 11:43 a.m.