Santillana Reservoir (upper basin connection)
E148778
Santillana Reservoir (upper basin connection) is a key water storage and regulation facility in the upper basin of the Manzanares River, supporting water supply and flow management in the Madrid region of Spain.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Santillana Reservoir (upper basin connection) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1303188 — 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: Santillana Reservoir (upper basin connection) Context triple: [Manzanares River, hasPart, Santillana Reservoir (upper basin connection)]
-
A.
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.
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B.
Tantangara Reservoir
Tantangara Reservoir is a major water storage lake in New South Wales, Australia, forming part of the Snowy Mountains Scheme for hydroelectric power generation and irrigation.
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C.
Hillview Reservoir
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
-
D.
Amawalk Reservoir
Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
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E.
Cross River Reservoir
Cross River Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
- 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: Santillana Reservoir (upper basin connection) Target entity description: Santillana Reservoir (upper basin connection) is a key water storage and regulation facility in the upper basin of the Manzanares River, supporting water supply and flow management in the Madrid region of Spain.
-
A.
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.
-
B.
Tantangara Reservoir
Tantangara Reservoir is a major water storage lake in New South Wales, Australia, forming part of the Snowy Mountains Scheme for hydroelectric power generation and irrigation.
-
C.
Hillview Reservoir
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
-
D.
Amawalk Reservoir
Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
-
E.
Cross River Reservoir
Cross River Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
- F. None of above. chosen
Statements (35)
| Predicate | Object |
|---|---|
| instanceOf |
hydraulic infrastructure
ⓘ
water reservoir ⓘ water storage facility ⓘ |
| basinCountry | Spain ⓘ |
| country | Spain ⓘ |
| function |
flow regulation
ⓘ
river flow management ⓘ water storage ⓘ water supply support ⓘ |
| hasRole |
key regulation facility for Manzanares River flows
ⓘ
key water storage facility in upper Manzanares basin ⓘ |
| isPartOf | Madrid regional water infrastructure network ⓘ |
| locatedIn |
Community of Madrid
ⓘ
Province of Madrid ⓘ
surface form:
Madrid region
Manzanares River ⓘ
surface form:
Manzanares River basin
Spain ⓘ upper basin of the Manzanares River ⓘ |
| locatedOn | Manzanares River ⓘ |
| partOf |
Manzanares River water management system
ⓘ
upper Manzanares basin regulation system ⓘ |
| purpose |
regulation of river flows for downstream users
ⓘ
storage of water for dry periods ⓘ support of regional water planning in Madrid ⓘ |
| regionServed |
Madrid metropolitan area
ⓘ
upper Manzanares River basin ⓘ |
| river | Manzanares River ⓘ |
| sector |
public water supply infrastructure
ⓘ
water resources management ⓘ |
| serves |
Province of Madrid
ⓘ
surface form:
Madrid region
municipal water supply system of Madrid region ⓘ |
| supports |
environmental flow management in Manzanares River
ⓘ
urban water demand in Madrid region ⓘ |
| typeOf | surface water reservoir ⓘ |
| usedFor |
hydrological regulation in upper Manzanares basin
ⓘ
regional water supply security ⓘ |
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: Santillana Reservoir (upper basin connection) Description of subject: Santillana Reservoir (upper basin connection) is a key water storage and regulation facility in the upper basin of the Manzanares River, supporting water supply and flow management in the Madrid region of Spain.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.