San Juan River basin
E95358
The San Juan River basin is a Central American watershed that drains Lake Nicaragua and surrounding regions through the San Juan River toward the Caribbean Sea.
All labels observed (3)
| Label | Occurrences |
|---|---|
| San Juan River basin canonical | 2 |
| San Juan River basin (via Lake Nicaragua) | 1 |
| San Juan River region | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T738650 — 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: San Juan River basin Context triple: [Lake Nicaragua, isPartOf, San Juan River basin]
-
A.
Pánuco River basin
The Pánuco River basin is a major drainage system in eastern Mexico that collects waters from the slopes of the Sierra Madre Oriental and empties into the Gulf of Mexico.
-
B.
Colombian Basin
The Colombian Basin is a deep oceanic basin in the southwestern Caribbean Sea, lying off the coasts of Colombia and Central America and forming one of the region’s major deep-water areas.
-
C.
Santa Cruz River
The Santa Cruz River is a significant river in southern Argentina that flows eastward from the Andes through the Patagonian steppe to the Atlantic Ocean.
-
D.
Gila River
The Gila River is a major waterway in the southwestern United States that flows through New Mexico and Arizona before joining the Colorado River.
-
E.
Desaguadero River
The Desaguadero River is a major river of the Altiplano in South America that drains Lake Titicaca and flows southward through Bolivia toward Lake Poopó.
- 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: San Juan River basin Target entity description: The San Juan River basin is a Central American watershed that drains Lake Nicaragua and surrounding regions through the San Juan River toward the Caribbean Sea.
-
A.
Pánuco River basin
The Pánuco River basin is a major drainage system in eastern Mexico that collects waters from the slopes of the Sierra Madre Oriental and empties into the Gulf of Mexico.
-
B.
Colombian Basin
The Colombian Basin is a deep oceanic basin in the southwestern Caribbean Sea, lying off the coasts of Colombia and Central America and forming one of the region’s major deep-water areas.
-
C.
Santa Cruz River
The Santa Cruz River is a significant river in southern Argentina that flows eastward from the Andes through the Patagonian steppe to the Atlantic Ocean.
-
D.
Gila River
The Gila River is a major waterway in the southwestern United States that flows through New Mexico and Arizona before joining the Colorado River.
-
E.
Desaguadero River
The Desaguadero River is a major river of the Altiplano in South America that drains Lake Titicaca and flows southward through Bolivia toward Lake Poopó.
- F. None of above. chosen
Statements (27)
| Predicate | Object |
|---|---|
| instanceOf |
river basin
ⓘ
watershed ⓘ |
| borderRegionOf |
Costa Rica
ⓘ
Nicaragua ⓘ |
| contains |
Lake Nicaragua
ⓘ
San Juan River ⓘ |
| continent | North America ⓘ |
| country |
Costa Rica
ⓘ
Nicaragua ⓘ |
| drainageDirection | eastward ⓘ |
| drainageSystem | Caribbean Sea basin ⓘ |
| drainedBy | San Juan River ⓘ |
| drains | Lake Nicaragua ⓘ |
| flowsInto | Caribbean Sea ⓘ |
| hasMainChannel | San Juan River ⓘ |
| hasNameInSpanish |
Río San Juan
ⓘ
surface form:
Cuenca del río San Juan
|
| hasOutflow | San Juan River ⓘ |
| hydrologicalBasinOf | San Juan River ⓘ |
| languageRegion | Spanish-speaking world ⓘ |
| locatedIn | Central America ⓘ |
| majorWaterBody |
Caribbean Sea
ⓘ
Lake Nicaragua ⓘ |
| partOf |
Costa Rica
ⓘ
Nicaragua ⓘ |
| region | Central America ⓘ |
| riverMouthLocation | Caribbean Sea ⓘ |
| terminatesIn | Caribbean Sea ⓘ |
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: San Juan River basin Description of subject: The San Juan River basin is a Central American watershed that drains Lake Nicaragua and surrounding regions through the San Juan River toward the Caribbean Sea.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
San Juan River basin (via Lake Nicaragua)
this entity surface form:
San Juan River region