Polgolla Dam
E557347
Polgolla Dam is a key diversion dam in Sri Lanka that channels water from the Mahaweli River for irrigation, hydropower generation, and regional water management.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Polgolla Dam canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5887604 — 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: Polgolla Dam Context triple: [Mahaweli River, hasDam, Polgolla Dam]
-
A.
Mula Dam
Mula Dam is a major irrigation and water-supply dam built on the Mula River in Maharashtra, India.
-
B.
Ralco Dam
Ralco Dam is a major hydroelectric power plant in Chile, known for its large reservoir and controversial impact on the local environment and indigenous communities.
-
C.
Randenigala Dam
Randenigala Dam is a major hydroelectric and irrigation dam in Sri Lanka, forming part of the Mahaweli Development Programme and creating the Randenigala Reservoir.
-
D.
Navilatirtha Dam
Navilatirtha Dam is a major irrigation and water management structure built across the Malaprabha River in Karnataka, India.
-
E.
Satpara Dam
Satpara Dam is a multipurpose concrete dam in Gilgit-Baltistan, Pakistan, built to generate hydroelectric power, provide irrigation, and supply drinking water using the waters of Satpara Lake.
- 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: Polgolla Dam Target entity description: Polgolla Dam is a key diversion dam in Sri Lanka that channels water from the Mahaweli River for irrigation, hydropower generation, and regional water management.
-
A.
Mula Dam
Mula Dam is a major irrigation and water-supply dam built on the Mula River in Maharashtra, India.
-
B.
Ralco Dam
Ralco Dam is a major hydroelectric power plant in Chile, known for its large reservoir and controversial impact on the local environment and indigenous communities.
-
C.
Randenigala Dam
Randenigala Dam is a major hydroelectric and irrigation dam in Sri Lanka, forming part of the Mahaweli Development Programme and creating the Randenigala Reservoir.
-
D.
Navilatirtha Dam
Navilatirtha Dam is a major irrigation and water management structure built across the Malaprabha River in Karnataka, India.
-
E.
Satpara Dam
Satpara Dam is a multipurpose concrete dam in Gilgit-Baltistan, Pakistan, built to generate hydroelectric power, provide irrigation, and supply drinking water using the waters of Satpara Lake.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
diversion dam
ⓘ
hydropower dam ⓘ |
| affects |
downstream irrigation networks
ⓘ
hydropower generation capacity on Mahaweli River ⓘ |
| basinCountry | Sri Lanka ⓘ |
| country | Sri Lanka ⓘ |
| crosses |
Mahaweli River
ⓘ
linked to:
Mahaweli Ganga
|
| divertsWaterTo |
Bowatenna Reservoir
ⓘ
linked to:
Rantembe Reservoir
|
| feeds |
Polgolla Hydropower Station
ⓘ
linked to:
Mahaweli Ganga Hydropower Complex
|
| hasFunction |
flow regulation
ⓘ
inter-basin water transfer ⓘ |
| hasType | concrete dam ⓘ |
| isKeyStructureIn |
Mahaweli Ganga development
ⓘ
linked to:
Mahaweli Development Programme
|
| locatedIn |
Central Province, Sri Lanka
ⓘ
linked to:
Central Province of Sri Lanka
|
| locatedNear | Kandy ⓘ |
| operator | Mahaweli Authority of Sri Lanka ⓘ |
| partOf | Mahaweli Development Programme ⓘ |
| purpose |
hydropower generation
ⓘ
irrigation ⓘ regional water management ⓘ water diversion ⓘ |
| regionServed |
Central Province, Sri Lanka
ⓘ
linked to:
Central Province of Sri Lanka
North Central Province, Sri Lanka ⓘ |
| riverSystem |
Mahaweli River basin
ⓘ
linked to:
Mahaweli River drainage basin
|
| status | operational ⓘ |
| usedFor |
agricultural irrigation schemes
ⓘ
domestic water supply support ⓘ hydroelectric power production ⓘ |
| watercourse | Mahaweli River ⓘ |
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: Polgolla Dam Description of subject: Polgolla Dam is a key diversion dam in Sri Lanka that channels water from the Mahaweli River for irrigation, hydropower generation, and regional water management.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.