La Mesa Watershed
E102741
La Mesa Watershed is a protected forest and reservoir area in Quezon City that serves as a major source of drinking water and a key urban green space for Metro Manila.
All labels observed (2)
| Label | Occurrences |
|---|---|
| La Mesa Watershed canonical | 4 |
| La Mesa watershed | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T441600 — 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 Watershed Context triple: [Quezon City, hasLandmark, La Mesa Watershed]
-
A.
Bull Run Watershed
The Bull Run Watershed is a protected forested drainage basin in the Cascade Range of Oregon that serves as the primary drinking water source for the Portland metropolitan area.
-
B.
Bull Run watershed
The Bull Run watershed is a drainage basin in northern Virginia whose streams and rivers, including Bull Run, shape the local hydrology and landscape around communities such as Manassas.
-
C.
Mystic River watershed
The Mystic River watershed is a drainage basin in the Greater Boston area of Massachusetts that collects water from numerous rivers and streams before emptying into Boston Harbor.
-
D.
Adobe Creek
Adobe Creek is a small stream in Santa Clara County, California, historically significant for inspiring the name of the software company Adobe Inc.
-
E.
Kayaderosseras Creek
Kayaderosseras Creek is a stream in eastern New York State that flows through Saratoga County and joins the Mohawk River, contributing to the Hudson River watershed.
- 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 Watershed Target entity description: La Mesa Watershed is a protected forest and reservoir area in Quezon City that serves as a major source of drinking water and a key urban green space for Metro Manila.
-
A.
Bull Run Watershed
The Bull Run Watershed is a protected forested drainage basin in the Cascade Range of Oregon that serves as the primary drinking water source for the Portland metropolitan area.
-
B.
Bull Run watershed
The Bull Run watershed is a drainage basin in northern Virginia whose streams and rivers, including Bull Run, shape the local hydrology and landscape around communities such as Manassas.
-
C.
Mystic River watershed
The Mystic River watershed is a drainage basin in the Greater Boston area of Massachusetts that collects water from numerous rivers and streams before emptying into Boston Harbor.
-
D.
Adobe Creek
Adobe Creek is a small stream in Santa Clara County, California, historically significant for inspiring the name of the software company Adobe Inc.
-
E.
Kayaderosseras Creek
Kayaderosseras Creek is a stream in eastern New York State that flows through Saratoga County and joins the Mohawk River, contributing to the Hudson River watershed.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
forest reserve
ⓘ
protected area ⓘ reservoir ⓘ watershed ⓘ |
| area | approximately 2,700 hectares ⓘ |
| conservationStatus | protected forest and watershed ⓘ |
| containsBodyOfWater | La Mesa Reservoir ⓘ |
| containsInfrastructure | La Mesa Dam ⓘ |
| country | Philippines ⓘ |
| ecosystemType |
man-made lake
ⓘ
secondary forest ⓘ |
| hasFacility |
biking trails
ⓘ
environmental education center ⓘ picnic grounds ⓘ viewing decks ⓘ walking trails ⓘ |
| hasPart |
La Mesa Dam
ⓘ
La Mesa Eco Park ⓘ
surface form:
La Mesa Ecopark
La Mesa Reservoir ⓘ |
| hasRecreationArea |
La Mesa Eco Park
ⓘ
surface form:
La Mesa Ecopark
|
| landUse |
forest
ⓘ
recreation ⓘ reservoir ⓘ |
| locatedIn |
Luzon
ⓘ
Metro Manila ⓘ Philippines ⓘ Quezon City ⓘ |
| locatedNear |
Fairview, Quezon City
ⓘ
Novaliches ⓘ |
| managedBy | Metropolitan Waterworks and Sewerage System ⓘ |
| operator | Metropolitan Waterworks and Sewerage System ⓘ |
| partOf | Angat–Ipo–La Mesa water system ⓘ |
| serves |
Metro Manila
ⓘ
Quezon City ⓘ |
| significance |
key urban green space for Metro Manila
ⓘ
largest remaining forest patch in Metro Manila ⓘ major source of drinking water for Metro Manila ⓘ |
| threat |
deforestation
ⓘ
informal settlements ⓘ pollution ⓘ urban encroachment ⓘ |
| use |
biodiversity conservation
ⓘ
drinking water supply ⓘ environmental education ⓘ flood regulation ⓘ urban green space ⓘ |
| waterSourceFor |
Metro Manila
ⓘ
Quezon City ⓘ |
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 Watershed Description of subject: La Mesa Watershed is a protected forest and reservoir area in Quezon City that serves as a major source of drinking water and a key urban green space for Metro Manila.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Quezon City
this entity surface form:
La Mesa watershed