Triple

T12982879
Position Surface form Disambiguated ID Type / Status
Subject Sri Lanka Railways E321694 entity
Predicate operatesLine P15252 FINISHED
Object Northern Line (Sri Lanka)
The Northern Line (Sri Lanka) is a major railway route that connects Colombo with the northern regions of Sri Lanka, including the city of Jaffna, serving as a key corridor for passenger and freight transport.
 E1017795 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
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: Northern Line (Sri Lanka) | Statement: [Sri Lanka Railways, operatesLine, Northern Line (Sri Lanka)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Northern Line (Sri Lanka)
Context triple: [Sri Lanka Railways, operatesLine, Northern Line (Sri Lanka)]
  • A. Puttalam Line
    The Puttalam Line is a major railway line in Sri Lanka that runs along the island’s western coast, serving towns and industrial areas between Colombo and Puttalam.
  • 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. Main Line (Sri Lanka)
    Main Line (Sri Lanka) is a major railway route running inland from Colombo through the central highlands, serving as one of the country’s primary passenger and freight corridors.
  • D. 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.
  • E. 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.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
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: Northern Line (Sri Lanka)
Triple: [Sri Lanka Railways, operatesLine, Northern Line (Sri Lanka)]
Generated description
The Northern Line (Sri Lanka) is a major railway route that connects Colombo with the northern regions of Sri Lanka, including the city of Jaffna, serving as a key corridor for passenger and freight transport.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Northern Line (Sri Lanka)
Target entity description: The Northern Line (Sri Lanka) is a major railway route that connects Colombo with the northern regions of Sri Lanka, including the city of Jaffna, serving as a key corridor for passenger and freight transport.
  • A. Puttalam Line
    The Puttalam Line is a major railway line in Sri Lanka that runs along the island’s western coast, serving towns and industrial areas between Colombo and Puttalam.
  • 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. Main Line (Sri Lanka)
    Main Line (Sri Lanka) is a major railway route running inland from Colombo through the central highlands, serving as one of the country’s primary passenger and freight corridors.
  • D. 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.
  • E. 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.
  • F. None of above. chosen

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69d8076479b8819090afce3591939cdf completed April 9, 2026, 8:09 p.m.
NER Named-entity recognition batch_69d97e5ca33481909a6cb06c636889f9 completed April 10, 2026, 10:49 p.m.
NED1 Entity disambiguation (via context triple) batch_69f6cbc277c881909ae77e8a44e06986 completed May 3, 2026, 4:14 a.m.
NEDg Description generation batch_69f6cea882d48190add88a8463f7d544 completed May 3, 2026, 4:27 a.m.
NED2 Entity disambiguation (via description) batch_69f6cf72a0cc8190bf8b6d606b8d0987 completed May 3, 2026, 4:30 a.m.
Created at: April 9, 2026, 8:39 p.m.