La Mesa Dam
E277845
La Mesa Dam is a major water reservoir in Quezon City, Philippines, that supplies a significant portion of Metro Manila’s drinking water.
All labels observed (1)
| Label | Occurrences |
|---|---|
| La Mesa Dam canonical | 11 |
How this entity was disambiguated
This entity first appeared as the object of triple T2520325 — 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: La Mesa Dam Context triple: [La Mesa Eco Park, adjacentTo, La Mesa Dam]
-
A.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
-
B.
Palisade Dam
Palisade Dam is an irrigation and water storage structure located on the Sevier River in central Utah, supporting local agriculture and recreation.
-
C.
Wheeler Dam
Wheeler Dam is a hydroelectric dam on the Tennessee River in northern Alabama that forms Wheeler Lake and helps provide power, navigation, and flood control in the region.
-
D.
Pine Flat Dam
Pine Flat Dam is a large concrete gravity dam in California that creates Pine Flat Lake and provides flood control, irrigation water storage, and hydroelectric power on the Kings River.
-
E.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay 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: La Mesa Dam Target entity description: La Mesa Dam is a major water reservoir in Quezon City, Philippines, that supplies a significant portion of Metro Manila’s drinking water.
-
A.
Red Rock Dam
Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
-
B.
Palisade Dam
Palisade Dam is an irrigation and water storage structure located on the Sevier River in central Utah, supporting local agriculture and recreation.
-
C.
Wheeler Dam
Wheeler Dam is a hydroelectric dam on the Tennessee River in northern Alabama that forms Wheeler Lake and helps provide power, navigation, and flood control in the region.
-
D.
Pine Flat Dam
Pine Flat Dam is a large concrete gravity dam in California that creates Pine Flat Lake and provides flood control, irrigation water storage, and hydroelectric power on the Kings River.
-
E.
O'Shaughnessy Dam
O'Shaughnessy Dam is a concrete arch-gravity dam in Yosemite National Park that creates the Hetch Hetchy Reservoir, supplying water and hydroelectric power to the San Francisco Bay Area.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
gravity dam ⓘ water reservoir ⓘ |
| alsoKnownAs |
La Mesa Reservoir
ⓘ
La Mesa Watershed Reservoir ⓘ
linked to:
La Mesa Reservoir
|
| basinCountry | Philippines ⓘ |
| category |
Buildings and structures in Quezon City
ⓘ
Dams in the Philippines ⓘ Reservoirs in the Philippines ⓘ |
| completedIn | 1929 ⓘ |
| conservationEffort |
community-based watershed protection initiatives
ⓘ
reforestation programs in La Mesa Watershed ⓘ |
| constructionStart | 1920s ⓘ |
| country | Philippines ⓘ |
| elevation | about 80 meters above sea level ⓘ |
| environmentalRole | supports biodiversity within La Mesa Watershed Reservation ⓘ |
| function | storage of treated and raw water for distribution ⓘ |
| hasAdjacentPark | La Mesa Eco Park ⓘ |
| hasIssue |
deforestation threats in watershed area
ⓘ
vulnerability to pollution from surrounding communities ⓘ |
| hasProtectedWatershed | La Mesa Watershed ⓘ |
| locatedIn |
Luzon
ⓘ
Metro Manila ⓘ Quezon City ⓘ |
| locatedInBarangay | Greater Lagro ⓘ |
| locatedInProtectedArea | La Mesa Watershed Reservation ⓘ |
| locatedNear |
Fairview, Quezon City
ⓘ
Novaliches ⓘ |
| managedBy | MWSS ⓘ |
| nearbyCity |
Caloocan
ⓘ
Quezon City ⓘ San Jose del Monte, Bulacan ⓘ
linked to:
San Jose del Monte
|
| operator |
MWSS
ⓘ
Metropolitan Waterworks and Sewerage System ⓘ |
| ownedBy |
Government of the Philippines
ⓘ
linked to:
Philippine government
|
| partOfSystem | Angat–Ipo–La Mesa water system ⓘ |
| primaryUse | municipal water supply ⓘ |
| region | National Capital Region ⓘ |
| reservoirName | La Mesa Reservoir ⓘ |
| significance |
largest drinking water reservoir serving Metro Manila
ⓘ
major source of potable water for Metro Manila ⓘ |
| suppliesWaterTo |
Caloocan
ⓘ
Metro Manila ⓘ Quezon City ⓘ Valenzuela ⓘ other parts of Metro Manila ⓘ |
| waterSource |
Angat Dam
ⓘ
Ipo Dam ⓘ |
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: La Mesa Dam Description of subject: La Mesa Dam is a major water reservoir in Quezon City, Philippines, that supplies a significant portion of Metro Manila’s drinking water.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.