Angostura River
E188137
The Angostura River is a significant Chilean watercourse that feeds into the Maipo River within the country’s central watershed.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Río Angostura | 2 |
| Angostura River canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1126509 — 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: Angostura River Context triple: [Maipo River, majorTributary, Angostura River]
-
A.
Coca River
The Coca River is a significant waterway in northeastern Ecuador that flows through the Amazon rainforest and contributes to the Napo River system.
-
B.
Apure River
The Apure River is a significant waterway in western Venezuela that drains the Llanos plains and supports regional agriculture, cattle ranching, and river transport.
-
C.
Guayas River
The Guayas River is a major waterway in western Ecuador that flows through the coastal lowlands and the city of Guayaquil before emptying into the Pacific Ocean.
-
D.
Magdalena River
The Magdalena River is Colombia’s principal waterway, flowing northward through the Andes to the Caribbean Sea and serving as a vital corridor for the country’s ecology, economy, and history.
-
E.
Guaviare River
The Guaviare River is a significant river in Colombia that drains a large portion of the eastern plains and rainforest before joining the Orinoco River.
- 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: Angostura River Target entity description: The Angostura River is a significant Chilean watercourse that feeds into the Maipo River within the country’s central watershed.
-
A.
Coca River
The Coca River is a significant waterway in northeastern Ecuador that flows through the Amazon rainforest and contributes to the Napo River system.
-
B.
Apure River
The Apure River is a significant waterway in western Venezuela that drains the Llanos plains and supports regional agriculture, cattle ranching, and river transport.
-
C.
Guayas River
The Guayas River is a major waterway in western Ecuador that flows through the coastal lowlands and the city of Guayaquil before emptying into the Pacific Ocean.
-
D.
Magdalena River
The Magdalena River is Colombia’s principal waterway, flowing northward through the Andes to the Caribbean Sea and serving as a vital corridor for the country’s ecology, economy, and history.
-
E.
Guaviare River
The Guaviare River is a significant river in Colombia that drains a large portion of the eastern plains and rainforest before joining the Orinoco River.
- F. None of above. chosen
Statements (15)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | Chile ⓘ |
| continent | South America ⓘ |
| country | Chile ⓘ |
| drainageBasin | central watershed of Chile ⓘ |
| flowsInto | Maipo River ⓘ |
| hasHydrologicalFunction | contributes to flow of Maipo River ⓘ |
| languageOfName | Spanish ⓘ |
| locatedIn |
Central Chile
ⓘ
linked to:
central Chile
|
| locatedInHydrologicalRegion |
Maipo hydrological basin
ⓘ
linked to:
Maipo River
|
| mouthOf | Maipo River ⓘ |
| nameInSpanish |
Río Angostura
ⓘ
linked to:
Angostura River
|
| partOf |
Chilean river network
ⓘ
Maipo River basin ⓘ
linked to:
Maipo River
|
| watercourseType | tributary ⓘ |
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: Angostura River Description of subject: The Angostura River is a significant Chilean watercourse that feeds into the Maipo River within the country’s central watershed.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Angostura River
linked to: Angostura River