Marañón River
E121202
The Marañón River is a major river in Peru that forms one of the principal headwaters of the Amazon River system.
All labels observed (8)
| Label | Occurrences |
|---|---|
| Marañón River canonical | 47 |
| Marañón River basin | 9 |
| Marañón | 1 |
| Marañón River (upper and middle basin) | 1 |
| Marañón River (via Pastaza River) | 1 |
| Marañón River system | 1 |
| Río Marañón | 1 |
| río Marañón | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T790213 — 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: Marañón River Context triple: [Amazon River, majorTributary, Marañón River]
-
A.
Ucayali River
The Ucayali River is a major Peruvian waterway that, together with the Marañón River, forms the main headwaters of the Amazon River.
-
B.
Urubamba River
The Urubamba River is a major waterway in Peru’s Andes that carves through the region of Machu Picchu and the Sacred Valley, playing a crucial role in Inca history and agriculture.
-
C.
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.
-
D.
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.
-
E.
Curaray River
The Curaray River is a remote waterway in the Amazon Basin of Ecuador and Peru, known for its dense rainforest surroundings and historical significance in missionary and indigenous encounters.
- 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: Marañón River Target entity description: The Marañón River is a major river in Peru that forms one of the principal headwaters of the Amazon River system.
-
A.
Ucayali River
The Ucayali River is a major Peruvian waterway that, together with the Marañón River, forms the main headwaters of the Amazon River.
-
B.
Urubamba River
The Urubamba River is a major waterway in Peru’s Andes that carves through the region of Machu Picchu and the Sacred Valley, playing a crucial role in Inca history and agriculture.
-
C.
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.
-
D.
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.
-
E.
Curaray River
The Curaray River is a remote waterway in the Amazon Basin of Ecuador and Peru, known for its dense rainforest surroundings and historical significance in missionary and indigenous encounters.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| continent | South America ⓘ |
| country | Peru ⓘ |
| drainageBasin | Amazon Basin ⓘ |
| ecoregion | Amazon rainforest ⓘ |
| flowsDirection | generally northwest to northeast ⓘ |
| flowsThrough |
Amazonas Region
ⓘ
Cajamarca Region ⓘ Loreto Region ⓘ
linked to:
Loreto Region of Peru
|
| forms |
principal headwater of the Amazon River
ⓘ
upper course of the Amazon River system ⓘ |
| hasBasinCountry | Peru ⓘ |
| hasBiodiversity |
endemic fish species
ⓘ
high aquatic biodiversity ⓘ |
| hasCharacteristic |
deep canyons
ⓘ
numerous rapids ⓘ seasonal flooding ⓘ |
| hasCulturalSignificanceFor | indigenous communities of northern Peru ⓘ |
| hasEnvironmentalIssue |
deforestation in watershed
ⓘ
hydroelectric dam proposals ⓘ |
| hasGeologicalFeature | Andean canyon system ⓘ |
| hasHydrologicalRole | major contributor to Amazon discharge ⓘ |
| hasMajorConfluenceWith | Ucayali River ⓘ |
| hasNameInLanguage |
Río Marañón
ⓘ
linked to:
Marañón River
|
| hasNavigationCondition | partially navigable ⓘ |
| hasValley | Marañón Valley ⓘ |
| isHeadwaterOf | Amazon River ⓘ |
| languageOfName | Spanish ⓘ |
| locatedIn | northern Peru ⓘ |
| mouth | Amazon River ⓘ |
| partOf |
Amazon River basin
ⓘ
linked to:
Amazon Basin
Peruvian Amazon ⓘ |
| passesNear |
Bagua, Peru
ⓘ
Jaén, Peru ⓘ |
| sourceCountry | Peru ⓘ |
| sourceRegion |
Andes Mountains
ⓘ
linked to:
Andes
|
| tributaryOf | Amazon River ⓘ |
| usedFor |
fishing
ⓘ
hydroelectric potential ⓘ river transport ⓘ |
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: Marañón River Description of subject: The Marañón River is a major river in Peru that forms one of the principal headwaters of the Amazon River system.
Referenced by (62)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Loreto Region of Peru
linked to: Marañón River
subject linked to:
northern Peru
linked to: Marañón River
linked to: Marañón River
linked to: Marañón River
linked to: Marañón River
linked to: Marañón River
linked to: Marañón River
linked to: Marañón River
linked to: Marañón River
linked to: Marañón River
linked to: Marañón River
subject linked to:
eastern Peru
linked to: Marañón River
linked to: Marañón River