Ebro basin and Tagus basin
E782445
The Ebro basin and Tagus basin are two major river drainage systems of the Iberian Peninsula, respectively channeling waters toward the Mediterranean Sea in the northeast and the Atlantic Ocean in the west.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ebro basin and Douro basin | 1 |
| Ebro basin and Tagus basin canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9107934 — 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: Ebro basin and Tagus basin Context triple: [Sistema Ibérico, drainageDivideBetween, Ebro basin and Tagus basin]
-
A.
Guadalquivir River basin
The Guadalquivir River basin is a major hydrological and agricultural region in southern Spain, encompassing much of Andalusia and centered around the Guadalquivir River and its tributaries.
-
B.
Ebro basin
The Ebro basin is a major river drainage region in northeastern Spain, encompassing the catchment area of the Ebro River and its tributaries across the Pyrenees and surrounding plains.
-
C.
Guadiana Basin
The Guadiana Basin is a major river basin of the Iberian Peninsula, draining parts of central and southwestern Spain and Portugal through the course of the Guadiana River.
-
D.
Duero Basin
The Duero Basin is a large sedimentary basin in the northwest of the Iberian Peninsula, drained by the Duero River and forming one of Spain’s principal agricultural and geographic regions.
-
E.
Tagus Basin
The Tagus Basin is the extensive river basin encompassing the catchment area of the Tagus River across central Spain and Portugal, supporting major cities, agriculture, and hydroelectric infrastructure.
- 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: Ebro basin and Tagus basin Target entity description: The Ebro basin and Tagus basin are two major river drainage systems of the Iberian Peninsula, respectively channeling waters toward the Mediterranean Sea in the northeast and the Atlantic Ocean in the west.
-
A.
Guadalquivir River basin
The Guadalquivir River basin is a major hydrological and agricultural region in southern Spain, encompassing much of Andalusia and centered around the Guadalquivir River and its tributaries.
-
B.
Ebro basin
chosen
The Ebro basin is a major river drainage region in northeastern Spain, encompassing the catchment area of the Ebro River and its tributaries across the Pyrenees and surrounding plains.
-
C.
Guadiana Basin
The Guadiana Basin is a major river basin of the Iberian Peninsula, draining parts of central and southwestern Spain and Portugal through the course of the Guadiana River.
-
D.
Duero Basin
The Duero Basin is a large sedimentary basin in the northwest of the Iberian Peninsula, drained by the Duero River and forming one of Spain’s principal agricultural and geographic regions.
-
E.
Tagus Basin
The Tagus Basin is the extensive river basin encompassing the catchment area of the Tagus River across central Spain and Portugal, supporting major cities, agriculture, and hydroelectric infrastructure.
- F. None of above.
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf | river basin ⓘ |
| continent |
Europe
ⓘ
Europe ⓘ |
| country |
Portugal
ⓘ
Spain ⓘ Spain ⓘ |
| drainageBasinOf |
Ebro River
NERFINISHED
ⓘ
Tagus River NERFINISHED ⓘ |
| drainageDirection |
northeast toward the Mediterranean Sea
ⓘ
west toward the Atlantic Ocean ⓘ |
| drainageTo |
Atlantic Ocean
NERFINISHED
ⓘ
Mediterranean Sea NERFINISHED ⓘ |
| drainageType |
exorheic basin
ⓘ
exorheic basin ⓘ |
| drainedBy |
Ebro River
NERFINISHED
ⓘ
Tagus River NERFINISHED ⓘ |
| emptiesInto |
Balearic Sea
NERFINISHED
ⓘ
Tagus Estuary NERFINISHED ⓘ |
| flowsTo |
Atlantic Ocean
NERFINISHED
ⓘ
Mediterranean Sea NERFINISHED ⓘ |
| geologicalFeature |
drainage basin
ⓘ
drainage basin ⓘ |
| hasMouthNear |
Ebro Delta
NERFINISHED
ⓘ
Lisbon NERFINISHED ⓘ |
| locatedIn |
Iberian Peninsula
ⓘ
Iberian Peninsula ⓘ |
| locatedInCountry |
Portugal
NERFINISHED
ⓘ
Spain NERFINISHED ⓘ Spain NERFINISHED ⓘ |
| locatedOn |
Iberian Peninsula
ⓘ
Iberian Peninsula ⓘ |
| majorRiver |
Ebro River
NERFINISHED
ⓘ
Tagus River NERFINISHED ⓘ |
| partOf |
Ebro River system
NERFINISHED
ⓘ
Portuguese river basins ⓘ Spanish river basins ⓘ Spanish river basins ⓘ Tagus River system NERFINISHED ⓘ |
| region |
central and western Iberian Peninsula
ⓘ
northeastern Spain ⓘ |
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: Ebro basin and Tagus basin Description of subject: The Ebro basin and Tagus basin are two major river drainage systems of the Iberian Peninsula, respectively channeling waters toward the Mediterranean Sea in the northeast and the Atlantic Ocean in the west.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Ebro basin and Douro basin