Triple

T22562012
Position Surface form Disambiguated ID Type / Status
Subject Colombo–Trincomalee route E557838 entity
Predicate partOfNetwork P840 FINISHED
Object Sri Lanka Railways network — 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: Sri Lanka Railways network | Statement: [Colombo–Trincomalee route, partOfNetwork, Sri Lanka Railways network]

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: Sri Lanka Railways network
Context triple: [Colombo–Trincomalee route, partOfNetwork, Sri Lanka Railways network]
  • A. Sri Lanka Railways chosen
    Sri Lanka Railways is the state-owned national railway operator of Sri Lanka, providing passenger and freight rail services across the country.
  • B. Colombo–Matara railway line
    The Colombo–Matara railway line is a coastal rail route in southwestern Sri Lanka that connects the capital region with major southern cities, including Galle and Matara.
  • C. Colombo–Badulla railway line
    The Colombo–Badulla railway line is a scenic Sri Lankan rail route that winds through the island’s central highlands, connecting the capital region with the mountainous Up-Country area.
  • D. Colombo urban rail network
    The Colombo urban rail network is the suburban and commuter rail system serving Sri Lanka’s capital region, connecting central Colombo with its surrounding suburbs and key transit hubs.
  • E. Eastern Line (Sri Lanka)
    Eastern Line (Sri Lanka) is a major railway route in Sri Lanka that connects the island’s eastern regions with the national rail network, serving key towns and facilitating passenger and freight transport.
  • 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_69e11e5ae4ac8190b1f503457603d969 elicitation completed
NER batch_69f15fa6a928819083925ea23aaaf725 ner completed
Created at: April 16, 2026, 8:52 p.m.