Acre River
E182075
The Acre River is a major tributary of the Purus River in western Amazonia, flowing through Peru, Bolivia, and Brazil and serving as an important waterway for the surrounding rainforest regions.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Acre River canonical | 14 |
| Acre River basin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1078308 — 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: Acre River Context triple: [Pando, containsRiver, Acre River]
-
A.
Gilão River
The Gilão River is a waterway in Portugal’s Algarve region that flows through the historic town of Tavira before reaching the Atlantic Ocean.
-
B.
Paranaíba River
The Paranaíba River is a major river in central Brazil that forms part of the upper Paraná River basin and serves as an important waterway for agriculture, hydroelectric power, and regional ecosystems.
-
C.
Xingu River
The Xingu River is a major river in northern Brazil that flows through the Amazon rainforest, supporting rich biodiversity and numerous Indigenous communities before joining the Amazon River.
-
D.
Ipiranga River
The Ipiranga River is a historically significant waterway in São Paulo, Brazil, best known as the site where Dom Pedro I proclaimed Brazil’s independence in 1822.
-
E.
Madeira River
The Madeira River is one of the largest and most significant rivers in South America, flowing through Bolivia and Brazil and playing a key role in the Amazon Basin’s ecology, transport, and hydroelectric power generation.
- 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: Acre River Target entity description: The Acre River is a major tributary of the Purus River in western Amazonia, flowing through Peru, Bolivia, and Brazil and serving as an important waterway for the surrounding rainforest regions.
-
A.
Gilão River
The Gilão River is a waterway in Portugal’s Algarve region that flows through the historic town of Tavira before reaching the Atlantic Ocean.
-
B.
Paranaíba River
The Paranaíba River is a major river in central Brazil that forms part of the upper Paraná River basin and serves as an important waterway for agriculture, hydroelectric power, and regional ecosystems.
-
C.
Xingu River
The Xingu River is a major river in northern Brazil that flows through the Amazon rainforest, supporting rich biodiversity and numerous Indigenous communities before joining the Amazon River.
-
D.
Ipiranga River
The Ipiranga River is a historically significant waterway in São Paulo, Brazil, best known as the site where Dom Pedro I proclaimed Brazil’s independence in 1822.
-
E.
Madeira River
The Madeira River is one of the largest and most significant rivers in South America, flowing through Bolivia and Brazil and playing a key role in the Amazon Basin’s ecology, transport, and hydroelectric power generation.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
river
ⓘ
tributary ⓘ |
| basinCountry |
Bolivia
ⓘ
Brazil ⓘ Peru ⓘ |
| borderWith |
Bolivia
ⓘ
Brazil ⓘ Peru ⓘ |
| continent | South America ⓘ |
| country |
Bolivia
ⓘ
Brazil ⓘ Peru ⓘ |
| environment | tropical rainforest ⓘ |
| flowsThrough |
Acre (state)
ⓘ
Pando Department ⓘ Ucayali Region ⓘ |
| hasEcologicalRole | supports Amazonian biodiversity ⓘ |
| hasEconomicRole | supports riverine communities ⓘ |
| hasWatershed |
Acre River basin
ⓘ
linked to:
Acre River
|
| languageRegion |
Portuguese
ⓘ
Spanish ⓘ |
| locatedIn |
Amazon Basin
ⓘ
Western Amazonia ⓘ
linked to:
Northwestern Amazonia
|
| mouthOf | Purus River ⓘ |
| partOf |
Amazon River system
ⓘ
linked to:
Amazon River
|
| region | western Amazon rainforest ⓘ |
| tributaryOf | Purus River ⓘ |
| usedFor |
fishing
ⓘ
local trade ⓘ river transport ⓘ |
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: Acre River Description of subject: The Acre River is a major tributary of the Purus River in western Amazonia, flowing through Peru, Bolivia, and Brazil and serving as an important waterway for the surrounding rainforest regions.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.