Triple

T13847323
Position Surface form Disambiguated ID Type / Status
Subject Hikkaduwa railway station E332840 entity
Predicate lineDirection P1101 FINISHED
Object Colombo–Matara corridor
The Colombo–Matara corridor is a key coastal transport route in southwestern Sri Lanka, linking the capital Colombo with the southern city of Matara along the island’s shoreline.
 E402884 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: Colombo–Matara corridor | Statement: [Hikkaduwa railway station, lineDirection, Colombo–Matara corridor]

Disambiguation candidates (2 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: Colombo–Matara corridor
Context triple: [Hikkaduwa railway station, lineDirection, Colombo–Matara corridor]
  • A. Colombo–Trincomalee route
    The Colombo–Trincomalee route is a major intercity railway line in Sri Lanka connecting the capital Colombo with the eastern port city of Trincomalee.
  • B. Colombo–Batticaloa route
    The Colombo–Batticaloa route is a major intercity railway line in Sri Lanka that connects the capital Colombo with the eastern city of Batticaloa, traversing diverse regions across the island.
  • C. Southern Expressway of Sri Lanka
    The Southern Expressway of Sri Lanka is a major controlled-access highway linking Colombo with key southern cities, significantly reducing travel time and boosting regional economic development.
  • D. Colombo–Katunayake Expressway
    The Colombo–Katunayake Expressway is a major controlled-access highway in Sri Lanka that connects the capital city Colombo with Bandaranaike International Airport and the city of Negombo, significantly reducing travel time between them.
  • E. Colombo–Kandy road
    The Colombo–Kandy road is a major highway in Sri Lanka that links the capital city Colombo with the historic hill city of Kandy, serving as a key route to the island’s central highlands.
  • 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: Colombo–Matara corridor
Target entity description: The Colombo–Matara corridor is a key coastal transport route in southwestern Sri Lanka, linking the capital Colombo with the southern city of Matara along the island’s shoreline.
  • A. Colombo–Trincomalee route
    The Colombo–Trincomalee route is a major intercity railway line in Sri Lanka connecting the capital Colombo with the eastern port city of Trincomalee.
  • B. Colombo–Batticaloa route
    The Colombo–Batticaloa route is a major intercity railway line in Sri Lanka that connects the capital Colombo with the eastern city of Batticaloa, traversing diverse regions across the island.
  • C. Southern Expressway of Sri Lanka chosen
    The Southern Expressway of Sri Lanka is a major controlled-access highway linking Colombo with key southern cities, significantly reducing travel time and boosting regional economic development.
  • D. Colombo–Katunayake Expressway
    The Colombo–Katunayake Expressway is a major controlled-access highway in Sri Lanka that connects the capital city Colombo with Bandaranaike International Airport and the city of Negombo, significantly reducing travel time between them.
  • E. Colombo–Kandy road
    The Colombo–Kandy road is a major highway in Sri Lanka that links the capital city Colombo with the historic hill city of Kandy, serving as a key route to the island’s central highlands.
  • F. None of above.

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Colombo–Matara corridor
Triple: [Hikkaduwa railway station, lineDirection, Colombo–Matara corridor]
Generated description
The Colombo–Matara corridor is a key coastal transport route in southwestern Sri Lanka, linking the capital Colombo with the southern city of Matara along the island’s shoreline.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d81c5ba13c8190839315f54768acfd elicitation completed
NER batch_69de02b2a9788190b164760adec64ef6 ner completed
NED1 batch_69f7ce6a39a481909d96b332e0a90cf4 ned_source_triple completed
NED2 batch_69fb039fdb1c8190ad5286d1cfe80a29 ned_description completed
NEDg batch_69f9fd56da288190b2bd33bc496c3fb9 nedg completed
Created at: April 9, 2026, 10:14 p.m.