Cape Bojador
E417484
Cape Bojador is a prominent headland on the Atlantic coast of Western Sahara that long marked a psychological and navigational barrier for European explorers during the Age of Discovery.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Cape Bojador canonical | 2 |
| Cabo Bojador | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4155802 — 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: Cape Bojador Context triple: [voyages of Henry the Navigator, reached, Cape Bojador]
-
A.
Cape Spartel
Cape Spartel is a prominent headland on the Atlantic coast of northern Morocco, marking the entrance to the Strait of Gibraltar near Tangier.
-
B.
Cape of Good Hope
The Cape of Good Hope is a rocky headland on the Atlantic coast of the Cape Peninsula in South Africa, historically significant as a key landmark on the sea route around the southern tip of Africa.
-
C.
Cabo de São Vicente
Cabo de São Vicente is a dramatic headland at the southwestern tip of mainland Portugal, known for its towering cliffs, historic lighthouse, and significance as a landmark of the Age of Discoveries.
-
D.
Cabo das Tormentas
Cabo das Tormentas is the original Portuguese name for the Cape of Good Hope, a historically significant headland on South Africa’s Atlantic coast that marked a key milestone in early European sea routes to Asia.
-
E.
Cape St. Vincent
Cape St. Vincent is a prominent headland at the southwestern tip of mainland Portugal, historically regarded as a key maritime landmark and once thought to be the edge of the known world.
- 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: Cape Bojador Target entity description: Cape Bojador is a prominent headland on the Atlantic coast of Western Sahara that long marked a psychological and navigational barrier for European explorers during the Age of Discovery.
-
A.
Cape Spartel
Cape Spartel is a prominent headland on the Atlantic coast of northern Morocco, marking the entrance to the Strait of Gibraltar near Tangier.
-
B.
Cape of Good Hope
The Cape of Good Hope is a rocky headland on the Atlantic coast of the Cape Peninsula in South Africa, historically significant as a key landmark on the sea route around the southern tip of Africa.
-
C.
Cabo de São Vicente
Cabo de São Vicente is a dramatic headland at the southwestern tip of mainland Portugal, known for its towering cliffs, historic lighthouse, and significance as a landmark of the Age of Discoveries.
-
D.
Cabo das Tormentas
Cabo das Tormentas is the original Portuguese name for the Cape of Good Hope, a historically significant headland on South Africa’s Atlantic coast that marked a key milestone in early European sea routes to Asia.
-
E.
Cape St. Vincent
Cape St. Vincent is a prominent headland at the southwestern tip of mainland Portugal, historically regarded as a key maritime landmark and once thought to be the edge of the known world.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
cape
ⓘ
geographical feature ⓘ headland ⓘ |
| administrativeRegion | Boujdour Province ⓘ |
| associatedWith |
Age of Exploration
ⓘ
surface form:
Age of Discovery
Henry the Navigator NERFINISHED ⓘ Portuguese maritime exploration ⓘ |
| climate | arid desert climate ⓘ |
| coordinates | approximately 26°07′N 14°30′W ⓘ |
| countryClaimedBy | Morocco ⓘ |
| environment | characterized by coastal desert and dunes ⓘ |
| fearedFor |
breaking surf
ⓘ
reports of sea monsters and boiling seas in medieval lore ⓘ shallow reefs ⓘ strong currents ⓘ |
| firstRoundedBy | Gil Eanes ⓘ |
| firstRoundedByCountry | Kingdom of Portugal ⓘ |
| firstRoundedByYear | 1434 ⓘ |
| geology | rocky promontory with adjacent sandbanks and reefs ⓘ |
| historicalRole |
major psychological barrier for European Atlantic exploration
ⓘ
notorious navigational hazard during the early Age of Discovery ⓘ |
| importance |
its successful rounding opened the way for further exploration of the West African coast
ⓘ
marked the limit of known European navigation along the African coast until the 15th century ⓘ |
| knownAs |
Cape Bojador
ⓘ
surface form:
Cabo Bojador
Cap Boujdour ⓘ Ras Bujdur ⓘ |
| lighthouseFunction | aids maritime navigation along the Western Sahara coast ⓘ |
| locatedIn |
Northwest Africa
ⓘ
Saharan Africa ⓘ
surface form:
Sahara region
Spanish Sahara ⓘ
surface form:
Western Sahara
|
| locatedOn | Atlantic Ocean ⓘ |
| mentionedIn |
early Portuguese exploration chronicles
ⓘ
medieval European portolan charts ⓘ |
| nameLanguage |
Arabic name: رأس بوجدور (Ras Bujdur)
ⓘ
French name: Cap Boujdour ⓘ Portuguese name: Cabo Bojador ⓘ |
| navigationAid | lighthouse at Cape Bojador ⓘ |
| nearbyGeographicFeature | north of the Canary Current upwelling zone’s core ⓘ |
| nearbySettlement | Boujdour NERFINISHED ⓘ |
| oceanographicFeature |
area of coastal upwelling
ⓘ
influenced by Canary Current ⓘ |
| partOf | Atlantic coast of Africa ⓘ |
| politicalStatus | located in a disputed territory (Western Sahara) ⓘ |
| regionStatus | non-self-governing territory as classified by the United Nations (Western Sahara context) ⓘ |
| strategicSignificance | historically important waypoint on Atlantic shipping routes along West Africa ⓘ |
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: Cape Bojador Description of subject: Cape Bojador is a prominent headland on the Atlantic coast of Western Sahara that long marked a psychological and navigational barrier for European explorers 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:
Cabo Bojador