Acelhuate River basin
E106527
The Acelhuate River basin is a watershed in central El Salvador that drains much of the San Salvador metropolitan area and is known for severe urban pollution and flood risk.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Acelhuate River basin canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T745923 — 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: Acelhuate River basin Context triple: [San Salvador, river, Acelhuate River basin]
-
A.
Actopan River
The Actopan River is a freshwater river in the Mexican state of Veracruz known for its clear waters, scenic canyons, and popularity for rafting and ecotourism.
-
B.
Illapel River
The Illapel River is a watercourse in Chile’s Coquimbo Region that flows through the Choapa Province, supporting local agriculture and communities in a semi-arid landscape.
-
C.
Yana River basin
The Yana River basin is a large Arctic drainage area in northeastern Siberia, encompassing the watershed of the Yana River as it flows northward to the Laptev Sea.
-
D.
Cañete River
The Cañete River is a major Peruvian river known for flowing from the high Andes to the Pacific Ocean, supporting agriculture and popular whitewater rafting in the Lima Region.
-
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: Acelhuate River basin Target entity description: The Acelhuate River basin is a watershed in central El Salvador that drains much of the San Salvador metropolitan area and is known for severe urban pollution and flood risk.
-
A.
Actopan River
The Actopan River is a freshwater river in the Mexican state of Veracruz known for its clear waters, scenic canyons, and popularity for rafting and ecotourism.
-
B.
Illapel River
The Illapel River is a watercourse in Chile’s Coquimbo Region that flows through the Choapa Province, supporting local agriculture and communities in a semi-arid landscape.
-
C.
Yana River basin
The Yana River basin is a large Arctic drainage area in northeastern Siberia, encompassing the watershed of the Yana River as it flows northward to the Laptev Sea.
-
D.
Cañete River
The Cañete River is a major Peruvian river known for flowing from the high Andes to the Pacific Ocean, supporting agriculture and popular whitewater rafting in the Lima Region.
-
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 (46)
| Predicate | Object |
|---|---|
| instanceOf |
river basin
ⓘ
watershed ⓘ |
| climateRisk |
increased flood frequency
ⓘ
intense rainfall events ⓘ |
| country | El Salvador ⓘ |
| drainageType |
sub-basin of Lempa River
ⓘ
urban watershed ⓘ |
| drains |
Cuscatancingo
ⓘ
Lake Ilopango ⓘ
surface form:
Ilopango
Mejicanos ⓘ San Salvador ⓘ San Salvador ⓘ
surface form:
San Salvador metropolitan area
Soyapango ⓘ |
| emptiesInto |
Lempa River
ⓘ
Lempa River basin ⓘ |
| environmentalIssue |
ecosystem degradation
ⓘ
flood hazard ⓘ public health risk ⓘ surface water contamination ⓘ |
| hasCharacteristic |
channel encroachment
ⓘ
flash flooding ⓘ high flood risk ⓘ high urbanization ⓘ informal settlements in floodplains ⓘ severe water pollution ⓘ solid waste pollution ⓘ |
| hasProblem |
encroachment by housing and industry
ⓘ
insufficient wastewater treatment ⓘ riverbank erosion ⓘ sedimentation in channels ⓘ |
| locatedIn | central El Salvador ⓘ |
| mainRiver | Acelhuate River ⓘ |
| managedBy |
Government of El Salvador
ⓘ
municipal governments of San Salvador metropolitan area ⓘ |
| partOf |
Lempa River basin
ⓘ
surface form:
Lempa River watershed
|
| pollutionSource |
industrial effluents
ⓘ
solid waste dumping ⓘ stormwater runoff ⓘ untreated domestic wastewater ⓘ |
| region |
La Libertad Department
ⓘ
San Salvador Department ⓘ |
| subjectOf |
flood risk management projects
ⓘ
river restoration proposals ⓘ water quality monitoring programs ⓘ |
| usedFor |
stormwater conveyance
ⓘ
urban drainage ⓘ |
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: Acelhuate River basin Description of subject: The Acelhuate River basin is a watershed in central El Salvador that drains much of the San Salvador metropolitan area and is known for severe urban pollution and flood risk.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.