Ilagan River
E445214
The Ilagan River is a significant waterway in the Philippines’ Isabela province, known for draining the Sierra Madre mountains and supporting local agriculture and communities before joining the Cagayan River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ilagan River canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4335206 — 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: Ilagan River Context triple: [Cagayan River, tributary, Ilagan River]
-
A.
Meycauayan River
Meycauayan River is a heavily polluted river in Bulacan, Philippines, known for flowing through industrial and residential areas before emptying into Manila Bay.
-
B.
Pagsanjan River
The Pagsanjan River is a river in the province of Laguna, Philippines, best known for its scenic gorge and the popular Pagsanjan Falls boat-ride attraction.
-
C.
Iloilo River
The Iloilo River is a significant waterway in the Philippines’ Western Visayas region, flowing through Iloilo City and serving as an important ecological, economic, and cultural resource.
-
D.
Magat River
Magat River is a major river in the northern Philippines known for the Magat Dam, one of the country’s largest hydroelectric and irrigation projects.
-
E.
Imus River
Imus River is a river in the province of Cavite in the Philippines that flows through several municipalities before emptying into Manila Bay.
- 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: Ilagan River Target entity description: The Ilagan River is a significant waterway in the Philippines’ Isabela province, known for draining the Sierra Madre mountains and supporting local agriculture and communities before joining the Cagayan River.
-
A.
Meycauayan River
Meycauayan River is a heavily polluted river in Bulacan, Philippines, known for flowing through industrial and residential areas before emptying into Manila Bay.
-
B.
Pagsanjan River
The Pagsanjan River is a river in the province of Laguna, Philippines, best known for its scenic gorge and the popular Pagsanjan Falls boat-ride attraction.
-
C.
Iloilo River
The Iloilo River is a significant waterway in the Philippines’ Western Visayas region, flowing through Iloilo City and serving as an important ecological, economic, and cultural resource.
-
D.
Magat River
Magat River is a major river in the northern Philippines known for the Magat Dam, one of the country’s largest hydroelectric and irrigation projects.
-
E.
Imus River
Imus River is a river in the province of Cavite in the Philippines that flows through several municipalities before emptying into Manila Bay.
- F. None of above. chosen
Statements (26)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| associatedWith |
floodplain communities in Ilagan area
ⓘ
rice farming in Isabela ⓘ |
| basinCountry | Philippines ⓘ |
| continent | Asia ⓘ |
| country | Philippines ⓘ |
| drains |
Sierra Madre mountains
ⓘ
linked to:
Sierra Madre
|
| flowsInto | Cagayan River ⓘ |
| hasEcologicalImportance | habitat for freshwater species in Isabela ⓘ |
| hasEconomicImportance | agricultural productivity in Isabela ⓘ |
| hasEnvironmentalRole | drainage of eastern slopes of Sierra Madre in Isabela ⓘ |
| hasUse |
domestic water supply
ⓘ
fishing ⓘ irrigation ⓘ |
| isTributaryOf | Cagayan River ⓘ |
| locatedIn |
Cagayan Valley region
ⓘ
Isabela province ⓘ
linked to:
Isabela Province
Luzon ⓘ |
| mouthRegion |
Cagayan River in Isabela
ⓘ
linked to:
Cagayan River
|
| namedAfter |
City of Ilagan
ⓘ
linked to:
Ilagan City
|
| partOf |
Cagayan River basin
ⓘ
linked to:
Cagayan River
|
| region | northeastern Luzon ⓘ |
| sourceRegion |
Sierra Madre range in Isabela
ⓘ
linked to:
Sierra Madre Mountains region
|
| supports |
local agriculture
ⓘ
local communities ⓘ |
| watercourseThrough |
City of Ilagan
ⓘ
linked to:
Ilagan 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: Ilagan River Description of subject: The Ilagan River is a significant waterway in the Philippines’ Isabela province, known for draining the Sierra Madre mountains and supporting local agriculture and communities before joining the Cagayan River.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.