Triple

T16900401
Position Surface form Disambiguated ID Type / Status
Subject Crawley railway station E424418 entity
Predicate railwayRegion P15232 FINISHED
Object Southern Region of British Railways (historical) E409292 NE FINISHED

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: Southern Region of British Railways (historical) | Statement: [Crawley railway station, railwayRegion, Southern Region of British Railways (historical)]

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: Southern Region of British Railways (historical)
Context triple: [Crawley railway station, railwayRegion, Southern Region of British Railways (historical)]
  • A. Southern Region of British Railways chosen
    The Southern Region of British Railways was one of the post-nationalisation operating regions in the south of England, known for its dense commuter network and extensive electrified lines serving London and the surrounding areas.
  • B. British Railways regions
    British Railways regions were the post-nationalisation administrative divisions of Britain's state-owned railway system, responsible for managing operations, infrastructure, and rolling stock across their respective geographic areas.
  • C. British Railways London Midland Region
    British Railways London Midland Region was the post-nationalisation division of British Railways responsible for former London, Midland and Scottish Railway routes, including the operation of locomotives such as the LMS Black Five.
  • D. British Railways Western Region
    British Railways Western Region was the post-nationalisation division of British Rail responsible for former Great Western Railway routes across western and southwestern England and South Wales.
  • E. British Rail Eastern Region
    British Rail Eastern Region was a major operating division of British Railways responsible for rail services across eastern England, inheriting much of the former London and North Eastern Railway network.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69d889da3e8c8190a2b118f383f0beac elicitation completed
NER batch_69e3c8dbc6e48190be90066b82fc61db ner completed
NED1 batch_6a00c7b273608190b552d8dc22bc51ef ned_source_triple completed
Created at: April 10, 2026, 5:29 a.m.