Alcántara Dam
E566848
Alcántara Dam is a large hydroelectric dam on the Tagus River in western Spain, known for its significant role in power generation and water management.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Alcántara Dam canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5774081 — 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: Alcántara Dam Context triple: [Tejo, hasNotableStructure, Alcántara Dam]
-
A.
San Roque Dam
San Roque Dam is one of the largest dams in the Philippines, serving as a major source of hydroelectric power, irrigation, and flood control in the Luzon region.
-
B.
Piedra del Águila Dam
Piedra del Águila Dam is a major hydroelectric dam in Argentine Patagonia, known for its large power-generating capacity and role in regulating the Limay River.
-
C.
Don Pedro Dam
Don Pedro Dam is a major embankment dam on the Tuolumne River in California, forming Don Pedro Reservoir and serving as a key source of water storage, hydroelectric power, and recreation in the region.
-
D.
San Carlos Dam
San Carlos Dam is a major concrete gravity dam in Arizona that creates San Carlos Lake and provides irrigation water, flood control, and hydroelectric power along the Gila River.
-
E.
Alicurá Dam
Alicurá Dam is a large hydroelectric dam in Argentina’s Patagonia region, known for forming the Alicurá Reservoir and generating power on the Limay River.
- 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: Alcántara Dam Target entity description: Alcántara Dam is a large hydroelectric dam on the Tagus River in western Spain, known for its significant role in power generation and water management.
-
A.
San Roque Dam
San Roque Dam is one of the largest dams in the Philippines, serving as a major source of hydroelectric power, irrigation, and flood control in the Luzon region.
-
B.
Piedra del Águila Dam
Piedra del Águila Dam is a major hydroelectric dam in Argentine Patagonia, known for its large power-generating capacity and role in regulating the Limay River.
-
C.
Don Pedro Dam
Don Pedro Dam is a major embankment dam on the Tuolumne River in California, forming Don Pedro Reservoir and serving as a key source of water storage, hydroelectric power, and recreation in the region.
-
D.
San Carlos Dam
San Carlos Dam is a major concrete gravity dam in Arizona that creates San Carlos Lake and provides irrigation water, flood control, and hydroelectric power along the Gila River.
-
E.
Alicurá Dam
Alicurá Dam is a large hydroelectric dam in Argentina’s Patagonia region, known for forming the Alicurá Reservoir and generating power on the Limay River.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
gravity dam
ⓘ
hydroelectric dam ⓘ |
| basinCountry | Spain NERFINISHED ⓘ |
| belongsToSector |
energy infrastructure
ⓘ
water infrastructure ⓘ |
| constructionBegan | 1964 ⓘ |
| constructionMaterial | concrete ⓘ |
| continent | Europe ⓘ |
| country | Spain ⓘ |
| designType | arch-gravity dam ⓘ |
| hasFunction |
electricity generation for the Spanish grid
ⓘ
regulation of Tagus River flow ⓘ |
| hasSpillway | yes ⓘ |
| height | 130 m ⓘ |
| length | 570 m ⓘ |
| locatedIn | Extremadura NERFINISHED ⓘ |
| locatedInHydrologicalConfederation | Confederación Hidrográfica del Tajo NERFINISHED ⓘ |
| locatedInProvince | Cáceres Province NERFINISHED ⓘ |
| locatedInRegion | western Spain ⓘ |
| locatedNear | Alcántara NERFINISHED ⓘ |
| locatedOnRiver | Tagus River NERFINISHED ⓘ |
| namedAfter | Alcántara NERFINISHED ⓘ |
| nearbyInfrastructure | Alcántara Roman Bridge NERFINISHED ⓘ |
| numberOfTurbines | 4 ⓘ |
| openingYear | 1969 ⓘ |
| operator | Iberdrola NERFINISHED ⓘ |
| partOf | Tagus River basin NERFINISHED ⓘ |
| plantCapacity | 915 MW ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation ⓘ water management ⓘ |
| reservoirCapacity | 3160 hm³ ⓘ |
| reservoirName | Alcántara Reservoir NERFINISHED ⓘ |
| reservoirSurfaceArea | 10400 ha ⓘ |
| riverCrossed | Tagus River NERFINISHED ⓘ |
| spillwayType | gated spillway ⓘ |
| status | operational ⓘ |
| turbineType | Francis turbine ⓘ |
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: Alcántara Dam Description of subject: Alcántara Dam is a large hydroelectric dam on the Tagus River in western Spain, known for its significant role in power generation and water management.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.