Três Marias Dam
E839362
Três Marias Dam is a large hydroelectric and flood-control dam in Brazil that forms one of the country’s major reservoirs on the São Francisco River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Três Marias Dam canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T10071595 — 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: Três Marias Dam Context triple: [São Francisco River, hasDam, Três Marias Dam]
-
A.
Gouvães Dam
Gouvães Dam is a hydroelectric dam in northern Portugal that forms part of the Tâmega River energy complex, contributing to regional power generation and water management.
-
B.
Santo Antônio Dam
Santo Antônio Dam is a large hydroelectric power plant in Brazil, built on the Madeira River near Porto Velho to generate electricity as part of the Madeira River energy complex.
-
C.
São Simão Dam
São Simão Dam is a large hydroelectric power facility in Brazil known for generating electricity and forming the São Simão Reservoir on the Paranaíba River.
-
D.
Barra Bonita Dam
Barra Bonita Dam is a hydroelectric and navigation dam complex in the state of São Paulo, Brazil, known for regulating the Tietê River and forming the Barra Bonita Reservoir.
-
E.
Foz do Chapecó Dam
Foz do Chapecó Dam is a hydroelectric power plant and dam complex located on the Uruguay River in southern Brazil, known for its significant contribution to regional electricity 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: Três Marias Dam Target entity description: Três Marias Dam is a large hydroelectric and flood-control dam in Brazil that forms one of the country’s major reservoirs on the São Francisco River.
-
A.
Gouvães Dam
Gouvães Dam is a hydroelectric dam in northern Portugal that forms part of the Tâmega River energy complex, contributing to regional power generation and water management.
-
B.
Santo Antônio Dam
Santo Antônio Dam is a large hydroelectric power plant in Brazil, built on the Madeira River near Porto Velho to generate electricity as part of the Madeira River energy complex.
-
C.
São Simão Dam
São Simão Dam is a large hydroelectric power facility in Brazil known for generating electricity and forming the São Simão Reservoir on the Paranaíba River.
-
D.
Barra Bonita Dam
Barra Bonita Dam is a hydroelectric and navigation dam complex in the state of São Paulo, Brazil, known for regulating the Tietê River and forming the Barra Bonita Reservoir.
-
E.
Foz do Chapecó Dam
Foz do Chapecó Dam is a hydroelectric power plant and dam complex located on the Uruguay River in southern Brazil, known for its significant contribution to regional electricity generation.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
flood-control dam
ⓘ
gravity dam ⓘ hydroelectric dam ⓘ |
| affects | downstream flow regime of São Francisco River ⓘ |
| basin | São Francisco River basin ⓘ |
| commissioningDate | 1962 ⓘ |
| constructionStartDate | 1957 ⓘ |
| continent | South America ⓘ |
| country | Brazil ⓘ |
| countryRankByReservoirSize | one of the largest reservoirs in Brazil ⓘ |
| damType | concrete gravity dam ⓘ |
| formsReservoir | Três Marias Reservoir NERFINISHED ⓘ |
| hasFunction |
sediment retention
ⓘ
support for irrigation ⓘ support for navigation ⓘ |
| hasSpillway | yes ⓘ |
| installedCapacity | 396 MW ⓘ |
| isPartOf | São Francisco River hydropower system NERFINISHED ⓘ |
| languageOfName | Portuguese ⓘ |
| localName | Usina Hidrelétrica de Três Marias NERFINISHED ⓘ |
| localNameLanguage | pt ⓘ |
| locatedInCountry | Brazil NERFINISHED ⓘ |
| locatedInMunicipality | Três Marias NERFINISHED ⓘ |
| locatedInRegion | Southeast Region of Brazil NERFINISHED ⓘ |
| locatedInState | Minas Gerais NERFINISHED ⓘ |
| locatedOnRiver | São Francisco River NERFINISHED ⓘ |
| namedAfter | Três Marias (municipality) NERFINISHED ⓘ |
| notableFor | creating one of Brazil’s major artificial lakes ⓘ |
| numberOfTurbines | 6 ⓘ |
| openingDate | 1961 ⓘ |
| operator | Companhia Energética de Minas Gerais NERFINISHED ⓘ |
| operatorAbbreviation | CEMIG NERFINISHED ⓘ |
| primaryEnergySource | hydropower ⓘ |
| purpose |
flood control
ⓘ
flow regulation of São Francisco River ⓘ hydroelectric power generation ⓘ water storage ⓘ |
| reservoirAlternateName |
Lago de Três Marias
NERFINISHED
ⓘ
Represa de Três Marias NERFINISHED ⓘ |
| reservoirName | Três Marias Reservoir NERFINISHED ⓘ |
| reservoirRiver | São Francisco River NERFINISHED ⓘ |
| turbineType | Francis turbine ⓘ |
| usedFor |
recreation on the reservoir
ⓘ
regional electricity supply in Minas Gerais ⓘ support of fisheries in the reservoir ⓘ |
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: Três Marias Dam Description of subject: Três Marias Dam is a large hydroelectric and flood-control dam in Brazil that forms one of the country’s major reservoirs on the São Francisco River.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.