Tocantins River
E681304
The Tocantins River is a major waterway in northern Brazil that flows through several states and supports transportation, hydroelectric power, and regional ecosystems before reaching the Atlantic Ocean.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Tocantins River canonical | 4 |
| Tocantins River system | 1 |
| Tocantins–Araguaia river system | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7369369 — 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: Tocantins River Context triple: [Pará, hasRiver, Tocantins River]
-
A.
Araguaia River
The Araguaia River is a major waterway in central Brazil known for its extensive wetlands, rich biodiversity, and role as a natural boundary between several Brazilian states.
-
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.
Tamanduateí River
The Tamanduateí River is an important urban river in the São Paulo metropolitan region of Brazil, flowing through the city and joining the Tietê River.
-
D.
Acre River
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.
-
E.
Canindé River
The Canindé River is a significant watercourse in northeastern Brazil that flows through the state of Piauí, contributing to its regional hydrology and ecosystems.
- 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: Tocantins River Target entity description: The Tocantins River is a major waterway in northern Brazil that flows through several states and supports transportation, hydroelectric power, and regional ecosystems before reaching the Atlantic Ocean.
-
A.
Araguaia River
The Araguaia River is a major waterway in central Brazil known for its extensive wetlands, rich biodiversity, and role as a natural boundary between several Brazilian states.
-
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.
Tamanduateí River
The Tamanduateí River is an important urban river in the São Paulo metropolitan region of Brazil, flowing through the city and joining the Tietê River.
-
D.
Acre River
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.
-
E.
Canindé River
The Canindé River is a significant watercourse in northeastern Brazil that flows through the state of Piauí, contributing to its regional hydrology and ecosystems.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinAreaApproxSqKm | 767000 ⓘ |
| basinCountry | Brazil NERFINISHED ⓘ |
| continent | South America ⓘ |
| country | Brazil ⓘ |
| dischargeLocation | near Tucuruí ⓘ |
| drainageBasin | Tocantins–Araguaia Basin NERFINISHED ⓘ |
| ecoregion | Amazon biome (transition areas) ⓘ |
| flowsInto | Atlantic Ocean NERFINISHED ⓘ |
| flowsThrough |
Goiás
NERFINISHED
ⓘ
Pará NERFINISHED ⓘ Tocantins (state) NERFINISHED ⓘ |
| hasBridge | Presidente Dutra Bridge (near Imperatriz) NERFINISHED ⓘ |
| hasHydroelectricPlant |
Estreito Hydroelectric Plant
NERFINISHED
ⓘ
Lajeado Dam NERFINISHED ⓘ Serra da Mesa Dam NERFINISHED ⓘ Tucuruí Dam NERFINISHED ⓘ |
| hasNavigationChallenges | rapids and seasonal variations ⓘ |
| hasTributary |
Araguaia River
NERFINISHED
ⓘ
Itacaiúnas River NERFINISHED ⓘ Manuel Alves Grande River NERFINISHED ⓘ Paranã River NERFINISHED ⓘ |
| isImportantFor |
regional economy of Northern Brazil
ⓘ
riverine communities ⓘ |
| isRegulatedBy | large dams ⓘ |
| languageOfName | Portuguese ⓘ |
| lengthApproxKm | 2640 ⓘ |
| locatedIn | Northern Brazil NERFINISHED ⓘ |
| mouth | Atlantic Ocean NERFINISHED ⓘ |
| mouthCountry | Brazil NERFINISHED ⓘ |
| mouthLocation | near Marajó Island ⓘ |
| nameEtymologyLanguage | Tupi NERFINISHED ⓘ |
| nameMeaning | Toucan’s beak ⓘ |
| notTributaryOf | Amazon River NERFINISHED ⓘ |
| partOf | Tocantins–Araguaia river system NERFINISHED ⓘ |
| passesNear |
Imperatriz
NERFINISHED
ⓘ
Marabá NERFINISHED ⓘ Palmas NERFINISHED ⓘ Tucuruí NERFINISHED ⓘ |
| separateFrom | Amazon River NERFINISHED ⓘ |
| sourceCountry | Brazil NERFINISHED ⓘ |
| sourceLocation | Central Brazil NERFINISHED ⓘ |
| supports |
inland waterway transport
ⓘ
regional ecosystems ⓘ |
| usedFor |
fishing
ⓘ
hydroelectric power generation ⓘ irrigation ⓘ navigation ⓘ |
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: Tocantins River Description of subject: The Tocantins River is a major waterway in northern Brazil that flows through several states and supports transportation, hydroelectric power, and regional ecosystems before reaching the Atlantic Ocean.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Tocantins–Araguaia river system
this entity surface form:
Tocantins River system