Diogo Cão
E150737
Diogo Cão was a 15th-century Portuguese navigator and explorer known for pioneering voyages along the west coast of Africa during the Age of Discovery.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T1303261 — 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: Diogo Cão Context triple: [John II of Portugal, supportedExplorer, Diogo Cão]
-
A.
Bartolomeu Dias
Bartolomeu Dias was a 15th-century Portuguese navigator best known for being the first European to sail around the southern tip of Africa, opening the sea route from Europe to Asia.
-
B.
Vasco da Gama
Vasco da Gama was a Portuguese navigator who pioneered the sea route from Europe to India, becoming one of the most significant explorers of the Age of Exploration.
-
C.
Pedro Álvares Cabral
Pedro Álvares Cabral was a Portuguese navigator and fleet commander best known for leading the 1500 voyage that resulted in the European discovery of Brazil.
-
D.
Diogo de Boitaca
Diogo de Boitaca was a prominent early 16th-century Portuguese architect and master of the Manueline style, noted for his foundational work on major religious monuments in Portugal.
-
E.
João da Nova
João da Nova was a Portuguese explorer and navigator of the Age of Discovery, noted for his voyages in the Indian Ocean and early contributions to Portugal’s maritime expansion.
- 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: Diogo Cão Target entity description: Diogo Cão was a 15th-century Portuguese navigator and explorer known for pioneering voyages along the west coast of Africa during the Age of Discovery.
-
A.
Bartolomeu Dias
Bartolomeu Dias was a 15th-century Portuguese navigator best known for being the first European to sail around the southern tip of Africa, opening the sea route from Europe to Asia.
-
B.
Vasco da Gama
Vasco da Gama was a Portuguese navigator who pioneered the sea route from Europe to India, becoming one of the most significant explorers of the Age of Exploration.
-
C.
Pedro Álvares Cabral
Pedro Álvares Cabral was a Portuguese navigator and fleet commander best known for leading the 1500 voyage that resulted in the European discovery of Brazil.
-
D.
Diogo de Boitaca
Diogo de Boitaca was a prominent early 16th-century Portuguese architect and master of the Manueline style, noted for his foundational work on major religious monuments in Portugal.
-
E.
João da Nova
João da Nova was a Portuguese explorer and navigator of the Age of Discovery, noted for his voyages in the Indian Ocean and early contributions to Portugal’s maritime expansion.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
Portuguese navigator
ⓘ
explorer ⓘ historical figure ⓘ person ⓘ |
| activePeriod | 15th century ⓘ |
| approximateBirthCentury | 15th century ⓘ |
| approximateDeathCentury | 15th century ⓘ |
| associatedWith | Congo Kingdom contact with Portugal ⓘ |
| commemoratedBy |
monuments in Angola
ⓘ
monuments in Portugal ⓘ |
| countryOfCitizenship | Kingdom of Portugal ⓘ |
| employer | Portuguese Crown ⓘ |
| era |
Age of Exploration
ⓘ
surface form:
Age of Discovery
|
| exploredRegion |
Congo River mouth
ⓘ
surface form:
Congo River estuary
coast of present-day Angola ⓘ west coast of Africa ⓘ |
| fieldOfWork | oceanic exploration ⓘ |
| historicalContext | Portuguese maritime expansion along the African coast ⓘ |
| influenced | later Portuguese exploration of Africa ⓘ |
| knownFor |
exploration of the west coast of Africa
ⓘ
voyages during the Age of Discovery ⓘ |
| languageOfName | Portuguese ⓘ |
| legacy | helped extend European geographic knowledge of Africa’s Atlantic coast ⓘ |
| monarchServed | John II of Portugal ⓘ |
| nameVariant |
Diogo Cam
ⓘ
Diogo Cão self-linksurface differs ⓘ
surface form:
Diogo Cao
|
| nationality | Portuguese ⓘ |
| nobleStatus | lesser nobility of Portugal ⓘ |
| notableVoyage |
first voyage to the mouth of the Congo River
ⓘ
second voyage along the west coast of Africa ⓘ |
| occupation |
explorer
ⓘ
navigator ⓘ |
| partOf | Portuguese exploration of the Atlantic Ocean ⓘ |
| placedPadrão |
Cape Cross
ⓘ
Cape Santa Maria ⓘ mouth of the Congo River ⓘ |
| sailingFor | Portuguese Empire ⓘ |
| seaRouteOpened | route from Portugal to the Congo River ⓘ |
| title |
Portuguese royal navigator
ⓘ
cavaleiro (knight) ⓘ |
| usedNavigationMethod |
celestial navigation
ⓘ
dead reckoning ⓘ |
| usedTechnology | caravel ⓘ |
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: Diogo Cão Description of subject: Diogo Cão was a 15th-century Portuguese navigator and explorer known for pioneering voyages along the west coast of Africa during the Age of Discovery.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Diogo Cao