Angat–Ipo–La Mesa water system
E514273
The Angat–Ipo–La Mesa water system is a major integrated water supply network in the Philippines that sources, stores, and conveys water from the Angat and Ipo dams to the La Mesa watershed and treatment facilities serving Metro Manila.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Angat–Ipo–La Mesa water system canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5357775 — 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: Angat–Ipo–La Mesa water system Context triple: [La Mesa Watershed, partOf, Angat–Ipo–La Mesa water system]
-
A.
Ambuklao Dam
Ambuklao Dam is a major hydroelectric and flood-control dam in Benguet, Philippines, known as one of the country’s earliest large-scale hydropower projects.
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B.
Metropolitan Waterworks and Sewerage System
The Metropolitan Waterworks and Sewerage System is a Philippine government agency responsible for providing and regulating water supply and sewerage services in Metro Manila and nearby areas.
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C.
Metropolitan Water Works system
The Metropolitan Water Works system is a historic public water supply network that provided drinking water to the Boston metropolitan area through an extensive system of reservoirs, aqueducts, and related infrastructure.
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D.
Malpaso Dam
Malpaso Dam is a major hydroelectric dam in Chiapas, Mexico, forming one of the country’s largest reservoirs and playing a key role in national power generation and flood control.
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E.
Marikina River
Marikina River is a major waterway in Metro Manila, Philippines, known for flowing through the city of Marikina and frequently causing floods in surrounding urban areas.
- 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: Angat–Ipo–La Mesa water system Target entity description: The Angat–Ipo–La Mesa water system is a major integrated water supply network in the Philippines that sources, stores, and conveys water from the Angat and Ipo dams to the La Mesa watershed and treatment facilities serving Metro Manila.
-
A.
Ambuklao Dam
Ambuklao Dam is a major hydroelectric and flood-control dam in Benguet, Philippines, known as one of the country’s earliest large-scale hydropower projects.
-
B.
Metropolitan Waterworks and Sewerage System
The Metropolitan Waterworks and Sewerage System is a Philippine government agency responsible for providing and regulating water supply and sewerage services in Metro Manila and nearby areas.
-
C.
Metropolitan Water Works system
The Metropolitan Water Works system is a historic public water supply network that provided drinking water to the Boston metropolitan area through an extensive system of reservoirs, aqueducts, and related infrastructure.
-
D.
Malpaso Dam
Malpaso Dam is a major hydroelectric dam in Chiapas, Mexico, forming one of the country’s largest reservoirs and playing a key role in national power generation and flood control.
-
E.
Marikina River
Marikina River is a major waterway in Metro Manila, Philippines, known for flowing through the city of Marikina and frequently causing floods in surrounding urban areas.
- F. None of above. chosen
Statements (37)
| Predicate | Object |
|---|---|
| instanceOf |
infrastructure network
ⓘ
water supply system ⓘ |
| associatedWithAgency | Metropolitan Waterworks and Sewerage System NERFINISHED ⓘ |
| associatedWithCity | Quezon City NERFINISHED ⓘ |
| associatedWithProvince | Bulacan NERFINISHED ⓘ |
| component |
Angat Dam
NERFINISHED
ⓘ
Ipo Dam NERFINISHED ⓘ La Mesa Dam NERFINISHED ⓘ aqueducts ⓘ intake works ⓘ raw water conveyance tunnels ⓘ water treatment plants ⓘ |
| conveysWaterTo |
La Mesa Dam
NERFINISHED
ⓘ
La Mesa water treatment plants ⓘ La Mesa watershed ⓘ |
| country | Philippines ⓘ |
| hasStorageFacility |
Angat reservoir
NERFINISHED
ⓘ
Ipo reservoir NERFINISHED ⓘ La Mesa reservoir NERFINISHED ⓘ |
| locatedIn | Luzon ⓘ |
| managedBy | Philippine water authorities ⓘ |
| partOf | Metro Manila water supply system NERFINISHED ⓘ |
| primaryFunction | municipal water supply ⓘ |
| regionServed | National Capital Region NERFINISHED ⓘ |
| role | primary water source for Metro Manila ⓘ |
| serves | Metro Manila NERFINISHED ⓘ |
| sourcesWaterFrom |
Angat Dam
NERFINISHED
ⓘ
Ipo Dam NERFINISHED ⓘ |
| suppliesUse |
commercial water use
ⓘ
domestic water use ⓘ |
| suppliesWaterTo |
Metropolitan Waterworks and Sewerage System
NERFINISHED
ⓘ
east concession of Metro Manila ⓘ west concession of Metro Manila ⓘ |
| supportsPopulationCenter | Greater Manila Area NERFINISHED ⓘ |
| supportsSector | urban water supply ⓘ |
| usesRiverBasin | Angat River basin NERFINISHED ⓘ |
| waterSourceType | surface water ⓘ |
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: Angat–Ipo–La Mesa water system Description of subject: The Angat–Ipo–La Mesa water system is a major integrated water supply network in the Philippines that sources, stores, and conveys water from the Angat and Ipo dams to the La Mesa watershed and treatment facilities serving Metro Manila.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.