San Juan Reservoir
E576590
San Juan Reservoir is a major artificial lake in central Spain, popular for water sports, recreation, and supplying water and hydroelectric power to the surrounding region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| San Juan Reservoir canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5851001 — 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: San Juan Reservoir Context triple: [Alberche River, hasDam, San Juan Reservoir]
-
A.
La Mesa Reservoir
La Mesa Reservoir is a major water storage facility in the Philippines that supplies potable water to Metro Manila and is located within the protected La Mesa Watershed.
-
B.
San Luis Reservoir
San Luis Reservoir is a large artificial lake in California that serves as a major water storage facility for irrigation and municipal use in the state’s Central Valley.
-
C.
La Paloma Reservoir
La Paloma Reservoir is a major artificial lake in Chile’s Coquimbo Region, known for supporting irrigation and water supply in the Monte Patria area.
-
D.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
-
E.
Abiquiu Reservoir
Abiquiu Reservoir is a man-made lake in northern New Mexico known for its scenic desert landscape, recreational opportunities, and role in regional water storage and management.
- 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: San Juan Reservoir Target entity description: San Juan Reservoir is a major artificial lake in central Spain, popular for water sports, recreation, and supplying water and hydroelectric power to the surrounding region.
-
A.
La Mesa Reservoir
La Mesa Reservoir is a major water storage facility in the Philippines that supplies potable water to Metro Manila and is located within the protected La Mesa Watershed.
-
B.
San Luis Reservoir
San Luis Reservoir is a large artificial lake in California that serves as a major water storage facility for irrigation and municipal use in the state’s Central Valley.
-
C.
La Paloma Reservoir
La Paloma Reservoir is a major artificial lake in Chile’s Coquimbo Region, known for supporting irrigation and water supply in the Monte Patria area.
-
D.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
-
E.
Abiquiu Reservoir
Abiquiu Reservoir is a man-made lake in northern New Mexico known for its scenic desert landscape, recreational opportunities, and role in regional water storage and management.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| basinCountry | Spain ⓘ |
| country | Spain ⓘ |
| hasActivity |
beach recreation
ⓘ
camping ⓘ fishing ⓘ hiking ⓘ kayaking ⓘ motor boating ⓘ sailing ⓘ scuba diving ⓘ stand-up paddleboarding ⓘ swimming ⓘ wakeboarding ⓘ water skiing ⓘ |
| hasFeature |
artificial beaches
ⓘ
boat ramps ⓘ designated bathing areas ⓘ forested shores ⓘ hydroelectric power plant ⓘ marinas ⓘ picnic areas ⓘ rocky coves ⓘ viewpoints ⓘ |
| hasFunction |
drinking water storage
ⓘ
energy production ⓘ irrigation support ⓘ |
| hasNearbyCity | Madrid ⓘ |
| hasNearbyMunicipality |
Cebreros
ⓘ
El Tiemblo ⓘ Pelayos de la Presa ⓘ San Martín de Valdeiglesias ⓘ |
| hasPart | San Juan Dam ⓘ |
| isPopularFor |
nautical sports
ⓘ
tourism ⓘ weekend excursions from Madrid ⓘ |
| locatedIn |
Community of Madrid
ⓘ
central Spain ⓘ |
| locatedOnRiver | Alberche River ⓘ |
| managedBy | regional water authorities of Community of Madrid ⓘ |
| use |
flood control
ⓘ
hydroelectric power generation ⓘ recreation ⓘ water sports ⓘ water supply ⓘ |
| waterBodyType | freshwater lake ⓘ |
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: San Juan Reservoir Description of subject: San Juan Reservoir is a major artificial lake in central Spain, popular for water sports, recreation, and supplying water and hydroelectric power to the surrounding region.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.