Pilarcitos Reservoir
E544521
Pilarcitos Reservoir is a key drinking water storage reservoir on the San Francisco Peninsula that helps supply water to the San Francisco Bay Area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pilarcitos Reservoir canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5754594 — 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: Pilarcitos Reservoir Context triple: [San Francisco Peninsula reservoir system, hasPart, Pilarcitos Reservoir]
-
A.
Carraízo reservoir
Carraízo Reservoir is a major water storage lake in Puerto Rico that serves as a key source of drinking water and flood control for the San Juan metropolitan area.
-
B.
Bargi Reservoir
Bargi Reservoir is a large artificial lake in Madhya Pradesh, India, created by the Bargi Dam on the Narmada River and used for irrigation, hydropower, and water supply.
-
C.
Los Molinos Lake
Los Molinos Lake is an artificial reservoir and popular recreational and water-sports destination located in Córdoba Province, Argentina.
-
D.
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.
-
E.
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.
- 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: Pilarcitos Reservoir Target entity description: Pilarcitos Reservoir is a key drinking water storage reservoir on the San Francisco Peninsula that helps supply water to the San Francisco Bay Area.
-
A.
Carraízo reservoir
Carraízo Reservoir is a major water storage lake in Puerto Rico that serves as a key source of drinking water and flood control for the San Juan metropolitan area.
-
B.
Bargi Reservoir
Bargi Reservoir is a large artificial lake in Madhya Pradesh, India, created by the Bargi Dam on the Narmada River and used for irrigation, hydropower, and water supply.
-
C.
Los Molinos Lake
Los Molinos Lake is an artificial reservoir and popular recreational and water-sports destination located in Córdoba Province, Argentina.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
drinking water reservoir
ⓘ
reservoir ⓘ |
| access | not generally open to public recreation ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| category |
Reservoirs in California
ⓘ
San Francisco Bay Area water infrastructure ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| formedBy | Pilarcitos Dam NERFINISHED ⓘ |
| inflow | Pilarcitos Creek NERFINISHED ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
San Francisco Bay Area ⓘ San Mateo County, California ⓘ |
| locatedInProtectedArea | watershed lands owned by the City and County of San Francisco ⓘ |
| locatedNear | Half Moon Bay, California NERFINISHED ⓘ |
| locatedOn | San Francisco Peninsula NERFINISHED ⓘ |
| managedBy | San Francisco Public Utilities Commission NERFINISHED ⓘ |
| operator | San Francisco Public Utilities Commission NERFINISHED ⓘ |
| outflow | Pilarcitos Creek NERFINISHED ⓘ |
| partOf |
Pilarcitos Creek watershed
NERFINISHED
ⓘ
San Francisco Regional Water System NERFINISHED ⓘ |
| purpose | ensure reliable potable water supply ⓘ |
| regionServed |
San Francisco Bay Area urban customers
ⓘ
San Francisco Peninsula NERFINISHED ⓘ |
| suppliesWaterTo |
San Francisco
NERFINISHED
ⓘ
San Francisco Bay Area NERFINISHED ⓘ San Mateo County communities ⓘ |
| use |
drinking water supply
ⓘ
municipal water supply ⓘ water storage ⓘ |
| watercourse | Pilarcitos Creek NERFINISHED ⓘ |
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: Pilarcitos Reservoir Description of subject: Pilarcitos Reservoir is a key drinking water storage reservoir on the San Francisco Peninsula that helps supply water to the San Francisco Bay Area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.