Triple

T13669171
Position Surface form Disambiguated ID Type / Status
Subject Maradana railway station E327703 entity
Predicate operator P179 FINISHED
Object Sri Lanka Railways E321694 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: Sri Lanka Railways | Statement: [Maradana railway station, operator, Sri Lanka Railways]

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
Context triple: [Maradana railway station, operator, Sri Lanka Railways]
  • 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. Sri Lanka Ports Authority
    The Sri Lanka Ports Authority is the state-owned agency responsible for managing and developing Sri Lanka’s major commercial seaports and related maritime infrastructure.
  • E. Myanma Railways
    Myanma Railways is the state-owned national railway operator of Myanmar, responsible for the country’s passenger and freight rail services and infrastructure.
  • 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_69d8076f1fa8819094664a59b55010df elicitation completed
NER batch_69dbc65832688190aea688fee0a7cbdb ner completed
NED1 batch_69f7a83eddac81909376c36452bfa38b ned_source_triple completed
Created at: April 9, 2026, 9:53 p.m.