Negro River
E695396
The Negro River is a major tributary of the Amazon River in South America, flowing through Colombia and Brazil and known for its dark, tannin-rich waters.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Negro River canonical | 7 |
How this entity was disambiguated
This entity first appeared as the object of triple T7787279 — 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 Context triple: [Guainía Department, locatedOnRiver, Negro River]
-
A.
Negro River
The Negro River is a major river in northern Patagonia, Argentina, formed by the confluence of the Limay and Neuquén rivers and known for its importance to regional agriculture and settlements.
-
B.
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.
-
C.
Massa River
The Massa River is a river in the Swiss canton of Valais that flows from the Aletsch Glacier through a deep gorge before joining the Rhône.
-
D.
Massa River
The Massa River is a watercourse in southwestern Morocco that flows through the Souss-Massa region and supports important agricultural lands and wetlands before reaching the Atlantic Ocean.
-
E.
Paraná
Paraná is a state in southern Brazil known for its diverse landscapes, including the Iguaçu Falls on the border with Argentina and Paraguay, and its strong agricultural and industrial economy.
- 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 Target entity description: The Negro River is a major tributary of the Amazon River in South America, flowing through Colombia and Brazil and known for its dark, tannin-rich waters.
-
A.
Negro River
The Negro River is a major river in northern Patagonia, Argentina, formed by the confluence of the Limay and Neuquén rivers and known for its importance to regional agriculture and settlements.
-
B.
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.
-
C.
Massa River
The Massa River is a river in the Swiss canton of Valais that flows from the Aletsch Glacier through a deep gorge before joining the Rhône.
-
D.
Massa River
The Massa River is a watercourse in southwestern Morocco that flows through the Souss-Massa region and supports important agricultural lands and wetlands before reaching the Atlantic Ocean.
-
E.
Paraná
Paraná is a state in southern Brazil known for its diverse landscapes, including the Iguaçu Falls on the border with Argentina and Paraguay, and its strong agricultural and industrial economy.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| biodiversity | high aquatic biodiversity ⓘ |
| biome | tropical rainforest ⓘ |
| cityOnRiver |
Barcelos
ⓘ
Manaus ⓘ Santa Isabel do Rio Negro ⓘ São Gabriel da Cachoeira ⓘ |
| climateZone | equatorial ⓘ |
| confluenceLocation | near Manaus ⓘ |
| continent | South America ⓘ |
| country |
Brazil
ⓘ
Colombia ⓘ |
| countrySubdivision |
Amazonas (Brazilian state)
ⓘ
linked to:
Amazonas state
Amazonas Department (Colombia) ⓘ |
| ecoregion | Rio Negro campinarana ⓘ |
| fishDiversity | very high ⓘ |
| flowsThrough |
Amazon rainforest
ⓘ
Brazilian Amazon ⓘ Colombian Amazon ⓘ
linked to:
Colombian Amazon region
|
| formsBorderBetween |
Colombia
ⓘ
Venezuela ⓘ |
| hasPhenomenon | meeting of the waters with the Solimões-Amazon River ⓘ |
| hasSourceRegion |
Guiana Shield region
ⓘ
linked to:
Guiana Shield
|
| knownFor |
dark-colored waters
ⓘ
high concentration of dissolved organic matter ⓘ meeting of the waters with the Amazon River near Manaus ⓘ |
| languageOriginOfName | Portuguese ⓘ |
| majorTributary |
Branco River
ⓘ
Demini River ⓘ Içana River ⓘ Jauaperi River ⓘ Uaupés River ⓘ
linked to:
Apaporis River
Vaupés River ⓘ Xié River ⓘ |
| mouth | Amazon River ⓘ |
| nameMeaning | Black River ⓘ |
| navigation | navigable along large stretches ⓘ |
| riverSystem |
Amazon River basin
ⓘ
linked to:
Amazon Basin
|
| sourceArea | border region between Colombia and Venezuela ⓘ |
| tributaryType | left tributary of the Amazon River ⓘ |
| waterAppearanceAtConfluence | sharp contrast between dark and muddy waters ⓘ |
| waterCharacteristic | tannin-rich ⓘ |
| waterChemistry |
acidic
ⓘ
low in nutrients ⓘ low in suspended sediments ⓘ |
| waterColor | dark ⓘ |
| waterType | blackwater river ⓘ |
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 Description of subject: The Negro River is a major tributary of the Amazon River in South America, flowing through Colombia and Brazil and known for its dark, tannin-rich waters.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.