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 (2)
| Label | Occurrences |
|---|---|
| Puttalam Line canonical | 3 |
| 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.
-
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
- 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)
| Predicate | Object |
|---|---|
| instanceOf |
railway line
ⓘ
railway line in Sri Lanka ⓘ |
| connectsRegion |
North Western Province of Sri Lanka
NERFINISHED
ⓘ
Western Province of Sri Lanka NERFINISHED ⓘ |
| connectsToLine | Coastal Line (Sri Lanka) NERFINISHED ⓘ |
| country | Sri Lanka ⓘ |
| electrification | not electrified ⓘ |
| endPoint | Puttalam railway station NERFINISHED ⓘ |
| gauge | broad gauge ⓘ |
| hasIntermediateStation |
Bangadeniya railway station
NERFINISHED
ⓘ
Chilaw railway station NERFINISHED ⓘ Kattuwa railway station NERFINISHED ⓘ Katunayake railway station NERFINISHED ⓘ Kochchikade railway station NERFINISHED ⓘ Lunuwila railway station NERFINISHED ⓘ Madampe railway station NERFINISHED ⓘ Nattandiya railway station NERFINISHED ⓘ Negombo railway station NERFINISHED ⓘ Palavi railway station NERFINISHED ⓘ Seeduwa railway station NERFINISHED ⓘ Waikkala railway station NERFINISHED ⓘ Wennappuwa railway station NERFINISHED ⓘ |
| hasServiceType |
commuter rail
ⓘ
intercity rail ⓘ |
| locatedIn |
North Western Province, Sri Lanka
NERFINISHED
ⓘ
Western Province, Sri Lanka NERFINISHED ⓘ |
| operator | Sri Lanka Railways NERFINISHED ⓘ |
| ownedBy | Government of Sri Lanka NERFINISHED ⓘ |
| partOfNetwork | Sri Lanka Railways network NERFINISHED ⓘ |
| primaryUse |
freight transport
ⓘ
passenger transport ⓘ |
| runsAlong | western coast of Sri Lanka ⓘ |
| servesArea |
industrial areas on Sri Lanka's west coast
ⓘ
western coastal belt of Sri Lanka ⓘ |
| servesCity | Colombo NERFINISHED ⓘ |
| servesFacility |
industrial facilities near Colombo
ⓘ
industrial facilities near Puttalam ⓘ |
| servesPortionOf | Sri Lanka's western seaboard ⓘ |
| servesTown |
Chilaw
NERFINISHED
ⓘ
Negombo NERFINISHED ⓘ Puttalam NERFINISHED ⓘ |
| startPoint | Colombo Fort railway station NERFINISHED ⓘ |
| status | operational ⓘ |
| terminus |
Colombo Fort railway station
NERFINISHED
ⓘ
Puttalam railway station NERFINISHED ⓘ |
| trackGauge |
1676 mm
ⓘ
5 ft 6 in ⓘ |
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 (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Colombo–Puttalam route