Nigeria–Benin border
E1001986
The Nigeria–Benin border is the international boundary separating Nigeria and Benin in West Africa, running from the Gulf of Guinea in the south through various communities and landscapes, including the Yewa area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Nigeria–Benin border canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T12795668 — 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: Nigeria–Benin border Context triple: [Yewa, borderFeature, Nigeria–Benin border]
-
A.
Benin–Togo border region
The Benin–Togo border region is a West African area characterized by shared cultural ties and diverse landscapes, including river basins, savannas, and agricultural zones that span both countries.
-
B.
Burkina Faso–Togo border region
The Burkina Faso–Togo border region is a sparsely populated West African frontier area characterized by savanna landscapes, cross-border ethnic communities, and shared river systems that support agriculture and pastoralism.
-
C.
Togo–Ghana border region
The Togo–Ghana border region is a transboundary area in West Africa characterized by shared river basins, including the Oti River, and a mix of cultural, linguistic, and ecological zones spanning both countries.
-
D.
Gabon–Republic of the Congo border
The Gabon–Republic of the Congo border is an international boundary in Central Africa that separates Gabon from the Republic of the Congo, running through forested and riverine landscapes including parts of Estuaire Province.
-
E.
Chad–Cameroon border
The Chad–Cameroon border is the international boundary in Central Africa separating Chad and Cameroon, much of which follows natural features such as the Logone River.
- 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: Nigeria–Benin border Target entity description: The Nigeria–Benin border is the international boundary separating Nigeria and Benin in West Africa, running from the Gulf of Guinea in the south through various communities and landscapes, including the Yewa area.
-
A.
Benin–Togo border region
The Benin–Togo border region is a West African area characterized by shared cultural ties and diverse landscapes, including river basins, savannas, and agricultural zones that span both countries.
-
B.
Burkina Faso–Togo border region
The Burkina Faso–Togo border region is a sparsely populated West African frontier area characterized by savanna landscapes, cross-border ethnic communities, and shared river systems that support agriculture and pastoralism.
-
C.
Togo–Ghana border region
The Togo–Ghana border region is a transboundary area in West Africa characterized by shared river basins, including the Oti River, and a mix of cultural, linguistic, and ecological zones spanning both countries.
-
D.
Gabon–Republic of the Congo border
The Gabon–Republic of the Congo border is an international boundary in Central Africa that separates Gabon from the Republic of the Congo, running through forested and riverine landscapes including parts of Estuaire Province.
-
E.
Chad–Cameroon border
The Chad–Cameroon border is the international boundary in Central Africa separating Chad and Cameroon, much of which follows natural features such as the Logone River.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
international border
ⓘ
political boundary ⓘ |
| adjacentSea | Atlantic Ocean NERFINISHED ⓘ |
| borderType |
land border
ⓘ
maritime border ⓘ |
| continent | Africa ⓘ |
| countryOnSide |
Benin
NERFINISHED
ⓘ
Nigeria NERFINISHED ⓘ |
| economicRole | corridor for West African trade ⓘ |
| geographicFeature |
coastal boundary at Gulf of Guinea
ⓘ
terrestrial boundary through Yewa communities ⓘ |
| governedBy |
Beninese border authorities
ⓘ
Nigerian border authorities ⓘ |
| hasBorderCrossing |
Idi Iroko border crossing
NERFINISHED
ⓘ
Seme border crossing NERFINISHED ⓘ |
| hasEthnicGroupsAcross |
Yewa communities
ⓘ
Yoruba communities ⓘ |
| hasHistoricalContext | colonial-era boundary delimitation ⓘ |
| hasIssue |
informal cross-border trade
ⓘ
smuggling ⓘ |
| hasNearbyCity |
Cotonou
NERFINISHED
ⓘ
Lagos NERFINISHED ⓘ |
| languageRegion |
English-speaking side in Nigeria
ⓘ
French-speaking side in Benin ⓘ |
| locatedInBodyOfWater | Bight of Benin NERFINISHED ⓘ |
| orientation | south–north ⓘ |
| partOf |
ECOWAS region
NERFINISHED
ⓘ
Nigeria–Benin customs boundary NERFINISHED ⓘ |
| passesThroughArea | Yewa area NERFINISHED ⓘ |
| passesThroughCountrySubdivision |
Beninese border regions
ⓘ
Lagos State NERFINISHED ⓘ Nigerian border regions ⓘ Ogun State NERFINISHED ⓘ |
| region | West Africa ⓘ |
| relatedTo | Nigeria–Benin relations NERFINISHED ⓘ |
| securityConcern | border control ⓘ |
| separates |
Benin
NERFINISHED
ⓘ
Nigeria NERFINISHED ⓘ |
| southernTerminus | Gulf of Guinea NERFINISHED ⓘ |
| sovereignStateBorder |
Federal Republic of Nigeria
NERFINISHED
ⓘ
Republic of Benin NERFINISHED ⓘ |
| startsAt | Gulf of Guinea coast NERFINISHED ⓘ |
| usedFor |
migration between Nigeria and Benin
ⓘ
trade between Nigeria and Benin ⓘ |
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: Nigeria–Benin border Description of subject: The Nigeria–Benin border is the international boundary separating Nigeria and Benin in West Africa, running from the Gulf of Guinea in the south through various communities and landscapes, including the Yewa area.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.