Triple

T13669180
Position Surface form Disambiguated ID Type / Status
Subject Maradana railway station E327703 entity
Predicate railwayLine P848 FINISHED
Object Trincomalee Line
The Trincomalee Line is a Sri Lankan railway route that connects the eastern coastal city of Trincomalee with the country’s main rail network.
 E1053184 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: Trincomalee Line | Statement: [Maradana railway station, railwayLine, Trincomalee Line]

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: Trincomalee Line
Context triple: [Maradana railway station, railwayLine, Trincomalee Line]
  • A. Sri Lankan coast
    The Sri Lankan coast is the tropical shoreline encircling the island nation of Sri Lanka, known for its sandy beaches, rich marine biodiversity, and strategic location along major Indian Ocean shipping routes.
  • B. Battle of Trincomalee
    The Battle of Trincomalee was a 1782 naval engagement off the coast of Sri Lanka during the American Revolutionary War, in which a French fleet under Admiral Suffren clashed with the British Royal Navy for control of a key Indian Ocean port.
  • C. Batticaloa
    Batticaloa is a coastal city in eastern Sri Lanka known historically as an important regional port and trading center.
  • D. British control of the Straits Zone
    British control of the Straits Zone was the post-World War I British military and administrative occupation of the strategic Turkish Straits area, aimed at securing naval access between the Mediterranean and the Black Sea and enforcing Allied terms on the defeated Ottoman Empire.
  • E. Batticaloa Fort
    Batticaloa Fort is a historic coastal fortress in eastern Sri Lanka, built during the colonial era and known for its strategic location and well-preserved ramparts.
  • 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: Trincomalee Line
Target entity description: The Trincomalee Line is a Sri Lankan railway route that connects the eastern coastal city of Trincomalee with the country’s main rail network.
  • A. Sri Lankan coast
    The Sri Lankan coast is the tropical shoreline encircling the island nation of Sri Lanka, known for its sandy beaches, rich marine biodiversity, and strategic location along major Indian Ocean shipping routes.
  • B. Battle of Trincomalee
    The Battle of Trincomalee was a 1782 naval engagement off the coast of Sri Lanka during the American Revolutionary War, in which a French fleet under Admiral Suffren clashed with the British Royal Navy for control of a key Indian Ocean port.
  • C. Batticaloa
    Batticaloa is a coastal city in eastern Sri Lanka known historically as an important regional port and trading center.
  • D. British control of the Straits Zone
    British control of the Straits Zone was the post-World War I British military and administrative occupation of the strategic Turkish Straits area, aimed at securing naval access between the Mediterranean and the Black Sea and enforcing Allied terms on the defeated Ottoman Empire.
  • E. Batticaloa Fort
    Batticaloa Fort is a historic coastal fortress in eastern Sri Lanka, built during the colonial era and known for its strategic location and well-preserved ramparts.
  • F. None of above. chosen

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: Trincomalee Line
Triple: [Maradana railway station, railwayLine, Trincomalee Line]
Generated description
The Trincomalee Line is a Sri Lankan railway route that connects the eastern coastal city of Trincomalee with the country’s main rail network.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d8076f1fa8819094664a59b55010df elicitation completed
NER batch_69dbc65832688190aea688fee0a7cbdb ner completed
NED1 batch_69f78b0f56048190bcbc6581a8cdc0f5 ned_source_triple completed
NED2 batch_69f78d6f02c48190a8f3bc4cb71910a0 ned_description completed
NEDg batch_69f78c0030e481909c20f21ddaa480dc nedg completed
Created at: April 9, 2026, 9:53 p.m.