Puttalam Line
E549467
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.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Puttalam Line canonical | 4 |
| Coastal line (Sri Lanka) | 1 |
| Colombo–Puttalam route | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5798460 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Puttalam Line Context triple: [Colombo Fort railway station, connectsTo, Puttalam Line]
-
A.
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.
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B.
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.
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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.
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D.
Andaman Trunk Road
The Andaman Trunk Road is a major arterial highway in the Andaman Islands that runs north–south across multiple islands, serving as the primary overland transport route for local communities.
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E.
Kandy railway station
Kandy railway station is a major rail hub in central Sri Lanka, serving the historic city of Kandy and connecting it to key destinations across the country.
- 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: Puttalam Line Target entity description: 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.
-
A.
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.
-
B.
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.
-
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.
Andaman Trunk Road
The Andaman Trunk Road is a major arterial highway in the Andaman Islands that runs north–south across multiple islands, serving as the primary overland transport route for local communities.
-
E.
Kandy railway station
Kandy railway station is a major rail hub in central Sri Lanka, serving the historic city of Kandy and connecting it to key destinations across the country.
- F. None of above. chosen
Statements (47)
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Puttalam Line Description of subject: 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.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Puttalam Line
linked to: Puttalam Line