Walawe River
E646326
The Walawe River is one of the major rivers in southern Sri Lanka, flowing from the central highlands to the Indian Ocean and supporting extensive irrigation and agriculture along its course.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Walawe River canonical | 12 |
| Walawe River headwaters | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5901658 — 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: Walawe River Context triple: [Central Highlands of Sri Lanka, isWatershedFor, Walawe River]
-
A.
Moawhango River
The Moawhango River is a river in New Zealand’s central North Island that flows through rugged hill country and feeds into the larger Rangitīkei River system.
-
B.
Kilombero River
The Kilombero River is a major river in southern Tanzania known for its vast floodplain, rich biodiversity, and importance as a wildlife habitat and agricultural area.
-
C.
Lumezi River
The Lumezi River is a tributary watercourse in eastern Zambia that feeds into the larger Luangwa River system.
-
D.
Lyunda River
The Lyunda River is a lesser-known river in Russia that serves as a tributary within the Vetluga River basin.
-
E.
Ngadda River
The Ngadda River is a waterway in northeastern Nigeria that flows through the city of Maiduguri and contributes to the region’s drainage into Lake Chad.
- 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: Walawe River Target entity description: The Walawe River is one of the major rivers in southern Sri Lanka, flowing from the central highlands to the Indian Ocean and supporting extensive irrigation and agriculture along its course.
-
A.
Moawhango River
The Moawhango River is a river in New Zealand’s central North Island that flows through rugged hill country and feeds into the larger Rangitīkei River system.
-
B.
Kilombero River
The Kilombero River is a major river in southern Tanzania known for its vast floodplain, rich biodiversity, and importance as a wildlife habitat and agricultural area.
-
C.
Lumezi River
The Lumezi River is a tributary watercourse in eastern Zambia that feeds into the larger Luangwa River system.
-
D.
Lyunda River
The Lyunda River is a lesser-known river in Russia that serves as a tributary within the Vetluga River basin.
-
E.
Ngadda River
The Ngadda River is a waterway in northeastern Nigeria that flows through the city of Maiduguri and contributes to the region’s drainage into Lake Chad.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | Sri Lanka ⓘ |
| continent | Asia ⓘ |
| country | Sri Lanka ⓘ |
| drainageBasinLocatedIn | Sri Lanka ⓘ |
| emptiesInto | Indian Ocean ⓘ |
| flowsDirection | from central highlands to the sea ⓘ |
| flowsFrom | Central Highlands of Sri Lanka ⓘ |
| flowsThrough | southern plains of Sri Lanka ⓘ |
| hasEconomicImportance |
supports farming communities
ⓘ
supports rural livelihoods ⓘ |
| hasEnvironmentalRole |
supports riverine ecosystems
ⓘ
supports wetland habitats ⓘ |
| hasHydrologicalFunction | drains part of the central highlands of Sri Lanka ⓘ |
| hasUse |
agricultural water supply
ⓘ
irrigation water supply ⓘ |
| isMajorRiverOf | southern Sri Lanka ⓘ |
| locatedIn | southern Sri Lanka ⓘ |
| mouth | Indian Ocean ⓘ |
| partOf | river systems of Sri Lanka ⓘ |
| sourceRegion |
Sri Lankan central highlands
ⓘ
linked to:
Central Highlands of Sri Lanka
|
| supports |
agriculture
ⓘ
irrigation ⓘ |
| terminatesNear | southern coast of Sri Lanka ⓘ |
| waterResourceFor | southern Sri Lanka ⓘ |
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: Walawe River Description of subject: The Walawe River is one of the major rivers in southern Sri Lanka, flowing from the central highlands to the Indian Ocean and supporting extensive irrigation and agriculture along its course.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.