Ivaí River
E775028
The Ivaí River is a major river in southern Brazil that flows through the state of Paraná and serves as an important tributary of the Paraná River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ivaí River canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8655920 — 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: Ivaí River Context triple: [Paraná (state), contains, Ivaí River]
-
A.
Curí Leuvú River
The Curí Leuvú River is a river in Argentina’s Neuquén Province that forms part of the Patagonian river system and contributes to the flow of the Neuquén River.
-
B.
Sabor River
The Sabor River is a significant river in northeastern Portugal that flows through the Trás-os-Montes region before joining the Douro.
-
C.
Imbrasos River
The Imbrasos River is a small river on the Greek island of Samos, historically significant for flowing near the ancient sanctuary of Hera known as the Heraion of Samos.
-
D.
Marta River
The Marta River is a watercourse in central Italy that drains Lake Bolsena and flows southwest toward the Tyrrhenian Sea.
-
E.
Carrao River
The Carrao River is a river in southeastern Venezuela that flows through Canaima National Park and is known for feeding Angel Falls, the world’s tallest uninterrupted waterfall.
- 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: Ivaí River Target entity description: The Ivaí River is a major river in southern Brazil that flows through the state of Paraná and serves as an important tributary of the Paraná River.
-
A.
Curí Leuvú River
The Curí Leuvú River is a river in Argentina’s Neuquén Province that forms part of the Patagonian river system and contributes to the flow of the Neuquén River.
-
B.
Sabor River
The Sabor River is a significant river in northeastern Portugal that flows through the Trás-os-Montes region before joining the Douro.
-
C.
Imbrasos River
The Imbrasos River is a small river on the Greek island of Samos, historically significant for flowing near the ancient sanctuary of Hera known as the Heraion of Samos.
-
D.
Marta River
The Marta River is a watercourse in central Italy that drains Lake Bolsena and flows southwest toward the Tyrrhenian Sea.
-
E.
Carrao River
The Carrao River is a river in southeastern Venezuela that flows through Canaima National Park and is known for feeding Angel Falls, the world’s tallest uninterrupted waterfall.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | Brazil NERFINISHED ⓘ |
| continent | South America ⓘ |
| country | Brazil ⓘ |
| drainageBasin | Paraná River basin NERFINISHED ⓘ |
| flowsThrough | Paraná (state) NERFINISHED ⓘ |
| hasCountry | Brazil NERFINISHED ⓘ |
| hasMouthLocation | Paraná River NERFINISHED ⓘ |
| hasNameInLanguage | Rio Ivaí NERFINISHED ⓘ |
| hasType | tributary river ⓘ |
| isInHydrologicalRegion | Paraná River basin NERFINISHED ⓘ |
| isLocatedInPoliticalEntity |
Brazil
NERFINISHED
ⓘ
Paraná (state) NERFINISHED ⓘ |
| isMajorTributaryOf | Paraná River NERFINISHED ⓘ |
| isNaturalFeatureOf | Paraná (state) NERFINISHED ⓘ |
| isPartOf | South American river network ⓘ |
| isWatercourseOf | Southern Brazil NERFINISHED ⓘ |
| languageOfName | Portuguese ⓘ |
| locatedIn |
Brazilian Highlands
NERFINISHED
ⓘ
Paraná (state) NERFINISHED ⓘ |
| locatedInRegion | Southern Brazil NERFINISHED ⓘ |
| mouthOf | Paraná River NERFINISHED ⓘ |
| partOf | Paraná River basin NERFINISHED ⓘ |
| riverSystem | Paraná River system NERFINISHED ⓘ |
| tributaryOf | Paraná River NERFINISHED ⓘ |
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: Ivaí River Description of subject: The Ivaí River is a major river in southern Brazil that flows through the state of Paraná and serves as an important tributary of the Paraná River.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Paraná (state)