Río Magdalena
E20339
Río Magdalena is a small river in Mexico City that flows through the borough of Magdalena Contreras and is notable as one of the last remaining free-flowing rivers in the capital.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Río Magdalena canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T155968 — 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: Río Magdalena Context triple: [Magdalena Contreras, traversedBy, Río Magdalena]
-
A.
Guayas River
The Guayas River is a major waterway in western Ecuador that flows through the coastal lowlands and the city of Guayaquil before emptying into the Pacific Ocean.
-
B.
Orinoco River
The Orinoco River is one of the longest and most important rivers in South America, flowing through Venezuela and Colombia and supporting vast tropical ecosystems and human settlements.
-
C.
Croton River
The Croton River is a river in southeastern New York that flows through Westchester and Putnam counties and is a key source for New York City's Croton water supply system.
-
D.
Rímac River
The Rímac River is a major waterway in central Peru that flows from the Andes through the city of Lima to the Pacific Ocean, serving as a crucial source of water for the capital region.
-
E.
Paraná River
The Paraná River is one of South America's longest and most important rivers, flowing through Brazil, Paraguay, and Argentina and serving as a key waterway for transport, hydroelectric power, and regional 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: Río Magdalena Target entity description: Río Magdalena is a small river in Mexico City that flows through the borough of Magdalena Contreras and is notable as one of the last remaining free-flowing rivers in the capital.
-
A.
Guayas River
The Guayas River is a major waterway in western Ecuador that flows through the coastal lowlands and the city of Guayaquil before emptying into the Pacific Ocean.
-
B.
Orinoco River
The Orinoco River is one of the longest and most important rivers in South America, flowing through Venezuela and Colombia and supporting vast tropical ecosystems and human settlements.
-
C.
Croton River
The Croton River is a river in southeastern New York that flows through Westchester and Putnam counties and is a key source for New York City's Croton water supply system.
-
D.
Rímac River
The Rímac River is a major waterway in central Peru that flows from the Andes through the city of Lima to the Pacific Ocean, serving as a crucial source of water for the capital region.
-
E.
Paraná River
The Paraná River is one of South America's longest and most important rivers, flowing through Brazil, Paraguay, and Argentina and serving as a key waterway for transport, hydroelectric power, and regional ecosystems.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| continent | North America ⓘ |
| country | Mexico ⓘ |
| drainageBasin | closed basin of the Valley of Mexico ⓘ |
| flowsDirection | generally northeast ⓘ |
| flowsThrough |
Desierto de los Leones National Park buffer zone
ⓘ
linked to:
Desierto de los Leones National Park
Los Dinamos park ⓘ Magdalena Contreras ⓘ Álvaro Obregón ⓘ |
| hasCharacteristic |
free-flowing in several stretches
ⓘ
mountain river at its upper course ⓘ one of the last remaining free-flowing rivers in Mexico City ⓘ urban river ⓘ |
| hasEcosystem |
riparian corridor in urban area
ⓘ
temperate forest in upper basin ⓘ |
| hasEnvironmentalIssue |
encroaching urbanization
ⓘ
pollution in lower reaches ⓘ |
| hasNameOrigin | named after Mary Magdalene ⓘ |
| hasRecreationActivity |
hiking along riverbanks
ⓘ
mountain biking in upper basin ⓘ picnicking in Los Dinamos ⓘ |
| hasSourceIn | Sierra de las Cruces ⓘ |
| isImportantFor |
biodiversity conservation in Mexico City
ⓘ
groundwater recharge in the Valley of Mexico ⓘ |
| isManagedBy |
Government of Mexico City
ⓘ
borough government of Magdalena Contreras ⓘ borough government of Álvaro Obregón ⓘ
linked to:
Álvaro Obregón
|
| isPartOf |
Magdalena River basin (Valley of Mexico)
ⓘ
linked to:
Valley of Mexico
|
| languageOfToponym | Spanish ⓘ |
| locatedIn | Mexico City ⓘ |
| locatedInAdministrativeEntity |
Magdalena Contreras
ⓘ
Álvaro Obregón ⓘ |
| locatedInProtectedArea |
Conservation land of Mexico City
ⓘ
Los Dinamos ecological park ⓘ
linked to:
Los Dinamos park
|
| locatedInTimeZone | America/Mexico_City ⓘ |
| mouthCountry | Mexico ⓘ |
| mouthLocatedIn | Mexico City ⓘ |
| partOf |
hydrological basin of the Valley of Mexico
ⓘ
natural heritage of Mexico City ⓘ |
| subjectOf |
environmental protection campaigns
ⓘ
river restoration projects ⓘ |
| usedFor |
ecotourism
ⓘ
environmental education ⓘ recreation ⓘ |
| watercourseType | perennial river ⓘ |
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: Río Magdalena Description of subject: Río Magdalena is a small river in Mexico City that flows through the borough of Magdalena Contreras and is notable as one of the last remaining free-flowing rivers in the capital.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.