Negro River basin
E297353
The Negro River basin is a major sub-basin of the Amazon system, encompassing the vast drainage area of the Rio Negro and its tributaries in northern South America.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Negro River basin canonical | 2 |
| Rio Negro region | 2 |
| Rio Negro basin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2731461 — 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: Negro River basin Context triple: [Amazon Basin, hasPart, Negro River basin]
-
A.
Paraná Delta
The Paraná Delta is a vast, biodiverse wetland and network of islands in northeastern Argentina, formed where the Paraná River empties into the Río de la Plata.
-
B.
Pánuco River basin
The Pánuco River basin is a major drainage system in eastern Mexico that collects waters from the slopes of the Sierra Madre Oriental and empties into the Gulf of Mexico.
-
C.
Paraná River
The Paraná River is one of South America's longest and most important rivers, flowing through Brazil, Paraguay, and Argentina and serving as a key waterway for transport, hydroelectric power, and regional ecosystems.
-
D.
Carioca River
The Carioca River is a small urban waterway in Rio de Janeiro, Brazil, historically important as a source of fresh water for the city and now known for running through the Tijuca Forest and into Guanabara Bay.
-
E.
Amazon Basin
The Amazon Basin is the vast tropical drainage region of the Amazon River in South America, encompassing the world’s largest rainforest and one of the most biodiverse ecosystems on Earth.
- 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: Negro River basin Target entity description: The Negro River basin is a major sub-basin of the Amazon system, encompassing the vast drainage area of the Rio Negro and its tributaries in northern South America.
-
A.
Paraná Delta
The Paraná Delta is a vast, biodiverse wetland and network of islands in northeastern Argentina, formed where the Paraná River empties into the Río de la Plata.
-
B.
Pánuco River basin
The Pánuco River basin is a major drainage system in eastern Mexico that collects waters from the slopes of the Sierra Madre Oriental and empties into the Gulf of Mexico.
-
C.
Paraná River
The Paraná River is one of South America's longest and most important rivers, flowing through Brazil, Paraguay, and Argentina and serving as a key waterway for transport, hydroelectric power, and regional ecosystems.
-
D.
Carioca River
The Carioca River is a small urban waterway in Rio de Janeiro, Brazil, historically important as a source of fresh water for the city and now known for running through the Tijuca Forest and into Guanabara Bay.
-
E.
Amazon Basin
The Amazon Basin is the vast tropical drainage region of the Amazon River in South America, encompassing the world’s largest rainforest and one of the most biodiverse ecosystems on Earth.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
drainage basin
ⓘ
river basin ⓘ |
| connectedVia |
Casiquiare Canal
ⓘ
linked to:
Casiquiare canal
|
| containsCity |
Barcelos
ⓘ
Manaus ⓘ Mitú ⓘ San Carlos de Río Negro ⓘ Santa Isabel do Rio Negro ⓘ São Gabriel da Cachoeira ⓘ |
| crossesPoliticalBorder |
Brazil–Colombia border
ⓘ
Brazil–Venezuela border ⓘ Colombia–Venezuela border ⓘ
linked to:
Colombia–Venezuela border region
|
| drainedBy | Rio Negro ⓘ |
| emptiesInto | Amazon River ⓘ |
| hasBiodiversityLevel | high ⓘ |
| hasClimate | equatorial humid climate ⓘ |
| hasConservationIssue |
climate change impacts
ⓘ
deforestation in surrounding areas ⓘ overfishing of ornamental fish ⓘ |
| hasEcosystemType |
blackwater river system
ⓘ
flooded forest ⓘ tropical rainforest ⓘ |
| hasHydrologicalRole |
major contributor of water to the Amazon River
ⓘ
regulator of regional hydrological cycle ⓘ |
| hasMouthNear | Manaus ⓘ |
| hasTributaryRiver |
Casiquiare Canal
ⓘ
linked to:
Casiquiare canal
Içana River ⓘ Rio Branco ⓘ Uaupés River ⓘ
linked to:
Apaporis River
Vaupés River ⓘ Xié River ⓘ |
| hasVegetation | evergreen broadleaf forest ⓘ |
| hasWaterType | acidic blackwater ⓘ |
| hydrologicallyConnectedTo |
Orinoco River basin
ⓘ
linked to:
Orinoco Basin
|
| inhabitedBy |
Baniwa peoples
ⓘ
linked to:
Nonuya people
Indigenous peoples ⓘ Tukano peoples ⓘ Yanomami peoples ⓘ
linked to:
Yanomami
|
| locatedIn |
Brazil
ⓘ
Colombia ⓘ Venezuela ⓘ northern South America ⓘ |
| majorSubBasinOf |
Amazon River system
ⓘ
linked to:
Amazon River
|
| partOf | Amazon Basin ⓘ |
| partOfBiome | Amazon rainforest ⓘ |
| supportsActivity |
fishing
ⓘ
river transport ⓘ small-scale agriculture ⓘ |
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: Negro River basin Description of subject: The Negro River basin is a major sub-basin of the Amazon system, encompassing the vast drainage area of the Rio Negro and its tributaries in northern South America.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Negro River basin
linked to: Negro River basin
linked to: Negro River basin