Triple

T19198479
Position Surface form Disambiguated ID Type / Status
Subject Castlerock E470035 entity
Predicate railwayLine P848 FINISHED
Object Belfast–Derry railway line — 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: Belfast–Derry railway line | Statement: [Castlerock, railwayLine, Belfast–Derry railway line]

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: Belfast–Derry railway line
Context triple: [Castlerock, railwayLine, Belfast–Derry railway line]
  • A. Belfast–Derry railway line chosen
    The Belfast–Derry railway line is a key Northern Ireland Railways route connecting Belfast with the city of Derry/Londonderry through several intermediate towns.
  • B. Belfast–Portadown railway line
    The Belfast–Portadown railway line is a key rail corridor in Northern Ireland connecting Belfast with Portadown and serving major commuter towns such as Lisburn.
  • C. Belfast–Dublin railway line
    The Belfast–Dublin railway line is a major intercity rail corridor linking the capitals of Northern Ireland and the Republic of Ireland, serving key towns and cities along the east coast.
  • D. Belfast–Bangor line
    The Belfast–Bangor line is a key suburban railway route in Northern Ireland connecting the city of Belfast with the coastal town of Bangor.
  • E. Belfast–Larne line
    The Belfast–Larne line is a railway route in Northern Ireland connecting Belfast to the port town of Larne, historically operated by the Northern Counties Committee and important for both passenger and ferry-linked traffic.
  • 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_69d8dd0ad9088190a173b32657ae2e7a elicitation completed
NER batch_69e5f8a8daac8190b3558a1388596fb0 ner completed
Created at: April 10, 2026, 12:07 p.m.