Río Tajo
E508499
Río Tajo is the longest river in the Iberian Peninsula, flowing from eastern Spain across the country into Portugal before emptying into the Atlantic Ocean near Lisbon.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Río Tajo canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5249254 — 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 Tajo Context triple: [Tajo River, alsoKnownAs, Río Tajo]
-
A.
Manzanares River
The Manzanares River is a modest river in central Spain that flows through the city of Madrid and has historically shaped its landscape and development.
-
B.
Manzanares
Manzanares is a small Colombian town and municipality located in the mountainous Caldas Department in the Andean region.
-
C.
Berlanga de Duero
Berlanga de Duero is a historic town in the province of Soria, Spain, known for its medieval architecture and cultural heritage.
-
D.
Guadalfeo River
The Guadalfeo River is a river in southern Spain that flows from the Sierra Nevada mountains through the province of Granada to the Mediterranean Sea.
-
E.
Talavera River
The Talavera River is a waterway in the Philippines that forms part of the Pampanga River basin in Central Luzon.
- 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 Tajo Target entity description: Río Tajo is the longest river in the Iberian Peninsula, flowing from eastern Spain across the country into Portugal before emptying into the Atlantic Ocean near Lisbon.
-
A.
Manzanares River
The Manzanares River is a modest river in central Spain that flows through the city of Madrid and has historically shaped its landscape and development.
-
B.
Manzanares
Manzanares is a small Colombian town and municipality located in the mountainous Caldas Department in the Andean region.
-
C.
Berlanga de Duero
Berlanga de Duero is a historic town in the province of Soria, Spain, known for its medieval architecture and cultural heritage.
-
D.
Guadalfeo River
The Guadalfeo River is a river in southern Spain that flows from the Sierra Nevada mountains through the province of Granada to the Mediterranean Sea.
-
E.
Talavera River
The Talavera River is a waterway in the Philippines that forms part of the Pampanga River basin in Central Luzon.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
geographical feature
ⓘ
river ⓘ |
| continent | Europe ⓘ |
| country |
Portugal
ⓘ
Spain ⓘ |
| crossesRegion |
Castilla-La Mancha
NERFINISHED
ⓘ
Centro Region of Portugal NERFINISHED ⓘ Community of Madrid NERFINISHED ⓘ Extremadura NERFINISHED ⓘ Lisbon Region NERFINISHED ⓘ |
| emptiesInto | Atlantic Ocean NERFINISHED ⓘ |
| emptiesNear | Lisbon NERFINISHED ⓘ |
| estuaryLocatedIn | near Lisbon ⓘ |
| flowsThrough |
Portugal
NERFINISHED
ⓘ
Spain NERFINISHED ⓘ |
| formsBorderBetween | Spain and Portugal (in some stretches) ⓘ |
| hasBasinCountry |
Portugal
NERFINISHED
ⓘ
Spain NERFINISHED ⓘ |
| hasEstuary | Tagus Estuary NERFINISHED ⓘ |
| hasMajorCityOnRiver |
Alcántara
NERFINISHED
ⓘ
Aranjuez NERFINISHED ⓘ Lisbon NERFINISHED ⓘ Santarém NERFINISHED ⓘ Talavera de la Reina NERFINISHED ⓘ Toledo NERFINISHED ⓘ |
| hasNotableStructure |
25 de Abril Bridge (over its estuary)
NERFINISHED
ⓘ
Alcántara Bridge NERFINISHED ⓘ Vasco da Gama Bridge (over its estuary) NERFINISHED ⓘ |
| hasTributary |
Alagón River
NERFINISHED
ⓘ
Alberche River NERFINISHED ⓘ Guadarrama River NERFINISHED ⓘ Jarama River NERFINISHED ⓘ Sorraia River NERFINISHED ⓘ Tiétar River NERFINISHED ⓘ Zêzere River NERFINISHED ⓘ |
| knownAs |
Tagus
NERFINISHED
ⓘ
Tajo NERFINISHED ⓘ |
| languageOfName | Spanish ⓘ |
| languageVariantName | Portuguese: Tejo NERFINISHED ⓘ |
| locatedIn | Iberian Peninsula ⓘ |
| longestRiverOf | Iberian Peninsula NERFINISHED ⓘ |
| mouthLocatedIn |
Atlantic Ocean
NERFINISHED
ⓘ
near Lisbon ⓘ |
| partOf | Tagus River Basin NERFINISHED ⓘ |
| passesNear | Lisbon NERFINISHED ⓘ |
| sourceLocatedIn | eastern Spain NERFINISHED ⓘ |
| usedFor |
hydroelectric power
ⓘ
irrigation ⓘ water supply ⓘ |
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 Tajo Description of subject: Río Tajo is the longest river in the Iberian Peninsula, flowing from eastern Spain across the country into Portugal before emptying into the Atlantic Ocean near Lisbon.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.