Mahaweli Ganga
E581353
Mahaweli Ganga is the longest river in Sri Lanka, playing a crucial role in the country’s irrigation, agriculture, and hydroelectric power generation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mahaweli Ganga canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5887618 — 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: Mahaweli Ganga Context triple: [Mahaweli River, alsoKnownAs, Mahaweli Ganga]
-
A.
Kelani Ganga
Kelani Ganga is a major river in Sri Lanka that flows from the central highlands to the western coast, playing a key role in hydropower generation, water supply, and transport.
-
B.
Walawe Ganga
Walawe Ganga is a major river in southern Sri Lanka known for irrigating agricultural lands and supporting hydropower and wildlife habitats along its course.
-
C.
Dakshin Ganga
Dakshin Ganga is an honorific name for the Godavari River, revered as a sacred and major waterway of southern and central India akin to the Ganges in the north.
-
D.
Jamuna River
The Jamuna River is the main distributary channel of the Brahmaputra in Bangladesh, forming one of the country’s largest and most dynamic river systems.
-
E.
Kalu Ganga
Kalu Ganga is a major river in southwestern Sri Lanka known for flowing through the Sabaragamuwa region before reaching the Indian Ocean near Kalutara.
- 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: Mahaweli Ganga Target entity description: Mahaweli Ganga is the longest river in Sri Lanka, playing a crucial role in the country’s irrigation, agriculture, and hydroelectric power generation.
-
A.
Kelani Ganga
Kelani Ganga is a major river in Sri Lanka that flows from the central highlands to the western coast, playing a key role in hydropower generation, water supply, and transport.
-
B.
Walawe Ganga
Walawe Ganga is a major river in southern Sri Lanka known for irrigating agricultural lands and supporting hydropower and wildlife habitats along its course.
-
C.
Dakshin Ganga
Dakshin Ganga is an honorific name for the Godavari River, revered as a sacred and major waterway of southern and central India akin to the Ganges in the north.
-
D.
Jamuna River
The Jamuna River is the main distributary channel of the Brahmaputra in Bangladesh, forming one of the country’s largest and most dynamic river systems.
-
E.
Kalu Ganga
Kalu Ganga is a major river in southwestern Sri Lanka known for flowing through the Sabaragamuwa region before reaching the Indian Ocean near Kalutara.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| alsoKnownAs | Mahaweli River NERFINISHED ⓘ |
| basinCountry | Sri Lanka NERFINISHED ⓘ |
| continent | Asia ⓘ |
| country | Sri Lanka ⓘ |
| drainageBasinArea | over 10,000 square kilometers ⓘ |
| flowsInto |
Bay of Bengal
NERFINISHED
ⓘ
Indian Ocean NERFINISHED ⓘ |
| flowsThrough |
Central Province
NERFINISHED
ⓘ
Eastern Province NERFINISHED ⓘ North Central Province NERFINISHED ⓘ Uva Province NERFINISHED ⓘ |
| hasDam |
Kotmale Dam
NERFINISHED
ⓘ
Polgolla Dam NERFINISHED ⓘ Randenigala Dam NERFINISHED ⓘ Rantembe Dam NERFINISHED ⓘ Victoria Dam NERFINISHED ⓘ |
| hasReservoir |
Kotmale Reservoir
NERFINISHED
ⓘ
Randenigala Reservoir NERFINISHED ⓘ Rantembe Reservoir NERFINISHED ⓘ Victoria Reservoir NERFINISHED ⓘ |
| hasTributary |
Amban Ganga
NERFINISHED
ⓘ
Hulu Ganga NERFINISHED ⓘ Kotmale Oya NERFINISHED ⓘ Loggal Oya NERFINISHED ⓘ Uma Oya NERFINISHED ⓘ |
| importance |
key component of Sri Lanka’s hydroelectric power system
ⓘ
major source of irrigation water for dry zone agriculture in Sri Lanka ⓘ supports rice cultivation in Sri Lanka’s dry zone ⓘ |
| isLongestRiverOf | Sri Lanka NERFINISHED ⓘ |
| languageOfName | Sinhala NERFINISHED ⓘ |
| length | approximately 335 km ⓘ |
| locatedIn | Sri Lanka NERFINISHED ⓘ |
| majorCityNearMouth | Trincomalee NERFINISHED ⓘ |
| majorCityOnRiver |
Kandy
NERFINISHED
ⓘ
Polonnaruwa NERFINISHED ⓘ |
| mouthLocation |
Bay of Bengal
NERFINISHED
ⓘ
Indian Ocean NERFINISHED ⓘ near Trincomalee ⓘ |
| nameMeaning | Great Sandy River NERFINISHED ⓘ |
| partOf | Mahaweli Development Scheme NERFINISHED ⓘ |
| sourceLocation |
Central Highlands of Sri Lanka
NERFINISHED
ⓘ
Sri Pada massif NERFINISHED ⓘ |
| usedFor |
agriculture
ⓘ
drinking water supply ⓘ fisheries ⓘ hydroelectric power generation ⓘ inland navigation ⓘ irrigation ⓘ |
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: Mahaweli Ganga Description of subject: Mahaweli Ganga is the longest river in Sri Lanka, playing a crucial role in the country’s irrigation, agriculture, and hydroelectric power generation.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.