Maduru Oya
E554238
Maduru Oya is a major river in Sri Lanka known for its irrigation reservoir and surrounding national park rich in wildlife and dry-zone ecosystems.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Maduru Oya canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T5887627 — 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: Maduru Oya Context triple: [Mahaweli River, hasTributary, Maduru Oya]
-
A.
Kaduwela
Kaduwela is a rapidly developing suburban town in Sri Lanka’s Western Province, situated near Colombo and known for its growing residential and commercial significance.
-
B.
Sabaragamuwa
Sabaragamuwa is a historical region in Sri Lanka known for its rich natural resources, including gem mining and lush rainforests.
-
C.
Mullaitivu
Mullaitivu is a coastal town in northeastern Sri Lanka known for its strategic location and as a major site of conflict during the Sri Lankan Civil War.
-
D.
Kandy Lake
Kandy Lake is an artificial lake in the heart of Kandy, Sri Lanka, known for its scenic setting amid the city’s historic and religious landmarks.
-
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: Maduru Oya Target entity description: Maduru Oya is a major river in Sri Lanka known for its irrigation reservoir and surrounding national park rich in wildlife and dry-zone ecosystems.
-
A.
Kaduwela
Kaduwela is a rapidly developing suburban town in Sri Lanka’s Western Province, situated near Colombo and known for its growing residential and commercial significance.
-
B.
Sabaragamuwa
Sabaragamuwa is a historical region in Sri Lanka known for its rich natural resources, including gem mining and lush rainforests.
-
C.
Mullaitivu
Mullaitivu is a coastal town in northeastern Sri Lanka known for its strategic location and as a major site of conflict during the Sri Lankan Civil War.
-
D.
Kandy Lake
Kandy Lake is an artificial lake in the heart of Kandy, Sri Lanka, known for its scenic setting amid the city’s historic and religious landmarks.
-
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 (38)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
geographical feature ⓘ national park ⓘ reservoir ⓘ river ⓘ |
| basinCountry | Sri Lanka ⓘ |
| country | Sri Lanka ⓘ |
| createdBy |
Maduru Oya Dam
ⓘ
linked to:
Maduru Oya Reservoir
|
| ecosystemType |
dry-zone forest
ⓘ
grassland ⓘ riverine habitat ⓘ scrubland ⓘ wetland ⓘ |
| flowsThrough | dry zone of Sri Lanka ⓘ |
| hasFeature |
Maduru Oya Dam
ⓘ
linked to:
Maduru Oya Reservoir
Maduru Oya Reservoir ⓘ |
| hasPart |
Maduru Oya Dam
ⓘ
linked to:
Maduru Oya Reservoir
Maduru Oya National Park ⓘ Maduru Oya Reservoir ⓘ |
| knownFor |
dry-zone ecosystems
ⓘ
elephants ⓘ irrigation reservoir ⓘ national park ⓘ sambar deer ⓘ sloth bears ⓘ water birds ⓘ wildlife diversity ⓘ |
| locatedIn |
Eastern Province, Sri Lanka
ⓘ
North Central Province, Sri Lanka ⓘ Uva Province, Sri Lanka ⓘ
linked to:
Uva Province of Sri Lanka
|
| locatedOn | Maduru Oya ⓘ |
| mouthLocation |
Bay of Bengal
ⓘ
Indian Ocean ⓘ |
| usedFor |
drinking water supply
ⓘ
fisheries ⓘ hydroelectric power generation ⓘ irrigation ⓘ wildlife conservation ⓘ |
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: Maduru Oya Description of subject: Maduru Oya is a major river in Sri Lanka known for its irrigation reservoir and surrounding national park rich in wildlife and dry-zone ecosystems.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.