Ucayali River
E118597
The Ucayali River is a major Peruvian waterway that, together with the Marañón River, forms the main headwaters of the Amazon River.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Ucayali River canonical | 20 |
| Ucayali River basin | 3 |
| Río Ucayali | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T790212 — 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: Ucayali River Context triple: [Amazon River, majorTributary, Ucayali River]
-
A.
Japurá River
The Japurá River is a long, sediment-rich river in western Amazonia that flows from Colombia into Brazil, contributing significantly to the water volume and ecological complexity of the Amazon basin.
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B.
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.
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C.
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.
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D.
Ucayali–Marañón confluence
The Ucayali–Marañón confluence is the junction in northeastern Peru where the Ucayali and Marañón rivers meet to form the main stem of the Amazon River.
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E.
Tapajós River
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.
- 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: Ucayali River Target entity description: The Ucayali River is a major Peruvian waterway that, together with the Marañón River, forms the main headwaters of the Amazon River.
-
A.
Japurá River
The Japurá River is a long, sediment-rich river in western Amazonia that flows from Colombia into Brazil, contributing significantly to the water volume and ecological complexity of the Amazon basin.
-
B.
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.
-
C.
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.
-
D.
Ucayali–Marañón confluence
The Ucayali–Marañón confluence is the junction in northeastern Peru where the Ucayali and Marañón rivers meet to form the main stem of the Amazon River.
-
E.
Tapajós River
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.
- F. None of above. chosen
Statements (47)
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: Ucayali River Description of subject: The Ucayali River is a major Peruvian waterway that, together with the Marañón River, forms the main headwaters of the Amazon River.
Referenced by (24)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Loreto Region of Peru
linked to: Ucayali River
subject linked to:
northern Peru
subject linked to:
southeastern Peru
linked to: Ucayali River
linked to: Ucayali River
subject linked to:
Asháninka (Campa)
linked to: Ucayali River