Tapajós River
E113704
The Tapajós River is a large clearwater river in northern Brazil that flows through the Amazon rainforest and is one of the Amazon River’s most significant tributaries.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tapajós River canonical | 7 |
| Tapajós River basin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T790207 — 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: Tapajós River Context triple: [Amazon River, majorTributary, Tapajós River]
-
A.
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.
-
B.
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.
-
C.
Paraguay River
The Paraguay River is a major South American waterway that flows through Brazil, Bolivia, Paraguay, and Argentina, forming part of the Río de la Plata Basin and serving as a vital route for transport, agriculture, and ecosystems in the region.
-
D.
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.
-
E.
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.
- 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: Tapajós River Target entity description: The Tapajós River is a large clearwater river in northern Brazil that flows through the Amazon rainforest and is one of the Amazon River’s most significant tributaries.
-
A.
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.
-
B.
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.
-
C.
Paraguay River
The Paraguay River is a major South American waterway that flows through Brazil, Bolivia, Paraguay, and Argentina, forming part of the Río de la Plata Basin and serving as a vital route for transport, agriculture, and ecosystems in the region.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
river
ⓘ
tributary ⓘ |
| basinCountry | Brazil ⓘ |
| belongsTo |
Pará
ⓘ
surface form:
state of Pará
|
| biome | tropical rainforest ⓘ |
| climateZone | equatorial ⓘ |
| confluenceNear | Santarém ⓘ |
| confluenceWith |
Amazon River
ⓘ
surface form:
Amazon River at Santarém
|
| country | Brazil ⓘ |
| ecoregion | Tapajós–Xingu moist forests ⓘ |
| flowsThrough |
Amazon rainforest
ⓘ
Pará ⓘ Santarém ⓘ |
| formedByConfluenceOf |
Juruena River
ⓘ
Teles Pires River ⓘ |
| hasEstuaryType | confluence estuary with the Amazon River ⓘ |
| hasMajorCityOnBank | Santarém ⓘ |
| hasSeasonality | marked high-water and low-water seasons ⓘ |
| hasTributary |
Arapiuns River
ⓘ
Crepori River ⓘ Cururu River ⓘ Jamanxim River ⓘ Juruena River ⓘ Teles Pires River ⓘ |
| lengthApprox |
810 km
ⓘ
about 500 miles ⓘ |
| locatedIn |
Amazon rainforest
ⓘ
northern Brazil ⓘ |
| mouthOf | Amazon River ⓘ |
| notableAs |
one of the largest clearwater rivers in the Amazon Basin
ⓘ
one of the most significant tributaries of the Amazon River ⓘ |
| partOf | Amazon Basin ⓘ |
| regionInhabitedBy |
Indigenous peoples
ⓘ
Munduruku people ⓘ |
| riverSystem |
Amazon Basin
ⓘ
surface form:
Amazon River basin
|
| sourceRegion |
Mato Grosso
ⓘ
central Brazil ⓘ |
| supports | rich aquatic biodiversity ⓘ |
| threatenedBy |
deforestation in its basin
ⓘ
hydroelectric dam projects ⓘ illegal mining ⓘ |
| tributaryOf | Amazon River ⓘ |
| usedFor |
ecotourism
ⓘ
fishing ⓘ local subsistence ⓘ river transport ⓘ |
| waterColor | clear greenish ⓘ |
| waterSedimentLoad | low ⓘ |
| waterType | clearwater 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: Tapajós River Description of subject: The Tapajós River is a large clearwater river in northern Brazil that flows through the Amazon rainforest and is one of the Amazon River’s most significant tributaries.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Tapajós River basin