Mattumagala, Sri Lanka
E454572
Mattumagala, Sri Lanka is a locality best known as the birthplace of renowned Sri Lankan fast bowler Chaminda Vaas.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mattumagala, Sri Lanka canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4573695 — 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: Mattumagala, Sri Lanka Context triple: [Chaminda Vaas, placeOfBirth, Mattumagala, Sri Lanka]
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A.
Sri Lanka
Sri Lanka is an island nation in the Indian Ocean known for its rich cultural heritage, diverse landscapes, and strategic location off the southern coast of India.
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B.
Lanka
Lanka is the island kingdom in the Ramayana epic ruled by the demon king Ravana, where Sita is held captive and Rama wages war to rescue her.
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C.
Southern Province, Sri Lanka
Southern Province, Sri Lanka is a coastal administrative region in the south of Sri Lanka known for its historic cities, beaches, and cultural heritage.
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D.
Northern Province, Sri Lanka
Northern Province, Sri Lanka is the island nation’s northernmost province, centered on the Jaffna Peninsula and known for its Tamil cultural heritage and post-civil war reconstruction.
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E.
Horagolla Walauwa, Sri Lanka
Horagolla Walauwa is a historic ancestral mansion in Sri Lanka closely associated with the influential Bandaranaike political family, including former Prime Minister Sirimavo Bandaranaike.
- 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: Mattumagala, Sri Lanka Target entity description: Mattumagala, Sri Lanka is a locality best known as the birthplace of renowned Sri Lankan fast bowler Chaminda Vaas.
-
A.
Sri Lanka
Sri Lanka is an island nation in the Indian Ocean known for its rich cultural heritage, diverse landscapes, and strategic location off the southern coast of India.
-
B.
Lanka
Lanka is the island kingdom in the Ramayana epic ruled by the demon king Ravana, where Sita is held captive and Rama wages war to rescue her.
-
C.
Southern Province, Sri Lanka
Southern Province, Sri Lanka is a coastal administrative region in the south of Sri Lanka known for its historic cities, beaches, and cultural heritage.
-
D.
Northern Province, Sri Lanka
Northern Province, Sri Lanka is the island nation’s northernmost province, centered on the Jaffna Peninsula and known for its Tamil cultural heritage and post-civil war reconstruction.
-
E.
Horagolla Walauwa, Sri Lanka
Horagolla Walauwa is a historic ancestral mansion in Sri Lanka closely associated with the influential Bandaranaike political family, including former Prime Minister Sirimavo Bandaranaike.
- F. None of above. chosen
Statements (10)
| Predicate | Object |
|---|---|
| instanceOf | locality ⓘ |
| birthPlace | Mattumagala, Sri Lanka ⓘ |
| birthplaceOf | Chaminda Vaas ⓘ |
| country | Sri Lanka ⓘ |
| hasCountryCode | LK ⓘ |
| locatedIn |
Gampaha District
ⓘ
Western Province, Sri Lanka ⓘ |
| locatedOnContinent | Asia ⓘ |
| notableFor | being the birthplace of Sri Lankan fast bowler Chaminda Vaas ⓘ |
| partOf | suburban area of Colombo ⓘ |
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: Mattumagala, Sri Lanka Description of subject: Mattumagala, Sri Lanka is a locality best known as the birthplace of renowned Sri Lankan fast bowler Chaminda Vaas.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Mattumagala, Sri Lanka