Pracana Dam
E554479
Pracana Dam is a hydroelectric and water management dam located on the Ocreza River in central Portugal, contributing to the regulation and use of resources in the Tagus River basin.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pracana Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5774164 — 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: Pracana Dam Context triple: [Tagus Basin, hasInfrastructure, Pracana Dam]
-
A.
Wlingi Dam
Wlingi Dam is a hydroelectric and irrigation dam located on the Brantas River in East Java, Indonesia.
-
B.
Wayatinah Dam
Wayatinah Dam is a hydroelectric dam on Tasmania’s Derwent River that forms part of the state’s major power generation scheme.
-
C.
Pantabangan Dam
Pantabangan Dam is a major multi-purpose dam in the Philippines known for irrigation, flood control, and hydroelectric power generation in Central Luzon.
-
D.
Jirau Dam
Jirau Dam is a large hydroelectric power plant in Brazil, built on the Madeira River as part of the country’s major Amazon basin energy infrastructure.
-
E.
Mula Dam
Mula Dam is a major irrigation and water-supply dam built on the Mula River in Maharashtra, India.
- 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: Pracana Dam Target entity description: Pracana Dam is a hydroelectric and water management dam located on the Ocreza River in central Portugal, contributing to the regulation and use of resources in the Tagus River basin.
-
A.
Wlingi Dam
Wlingi Dam is a hydroelectric and irrigation dam located on the Brantas River in East Java, Indonesia.
-
B.
Wayatinah Dam
Wayatinah Dam is a hydroelectric dam on Tasmania’s Derwent River that forms part of the state’s major power generation scheme.
-
C.
Pantabangan Dam
Pantabangan Dam is a major multi-purpose dam in the Philippines known for irrigation, flood control, and hydroelectric power generation in Central Luzon.
-
D.
Jirau Dam
Jirau Dam is a large hydroelectric power plant in Brazil, built on the Madeira River as part of the country’s major Amazon basin energy infrastructure.
-
E.
Mula Dam
Mula Dam is a major irrigation and water-supply dam built on the Mula River in Maharashtra, India.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
hydroelectric dam ⓘ water management infrastructure ⓘ |
| basinCountry | Portugal ⓘ |
| country | Portugal ⓘ |
| countrySubdivision | Portugal ⓘ |
| energySource | hydropower ⓘ |
| hasReservoir | Pracana Reservoir ⓘ |
| locatedIn |
central Portugal
ⓘ
linked to:
Centro Region of Portugal
|
| locatedInDistrict | Castelo Branco District ⓘ |
| locatedInRegion | Centro Region ⓘ |
| locatedOnRiver | Ocreza River ⓘ |
| partOf |
Tagus River basin water management system
ⓘ
linked to:
Confederación Hidrográfica del Tajo
|
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation support ⓘ river flow regulation ⓘ water management ⓘ water resources regulation ⓘ |
| riverBasin |
Tagus River basin
ⓘ
linked to:
Tagus Basin
|
| usedFor |
electricity production
ⓘ
flow regulation of Ocreza River ⓘ support of downstream water uses ⓘ surface water storage ⓘ |
| watercourseDammed | Ocreza 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: Pracana Dam Description of subject: Pracana Dam is a hydroelectric and water management dam located on the Ocreza River in central Portugal, contributing to the regulation and use of resources in the Tagus River basin.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.