Lagos Lagoon
E274569
Lagos Lagoon is a large coastal lagoon in southwestern Nigeria that forms part of the Lagos harbor system and plays a central role in the region’s transportation, commerce, and ecology.
All labels observed (8)
| Label | Occurrences |
|---|---|
| Lagos Lagoon canonical | 27 |
| Lagos Lagoon system | 2 |
| Bay of Lagos | 1 |
| Lagos Lagoon area | 1 |
| Lagos Lagoon island cluster | 1 |
| Lagos coastline | 1 |
| Lagos harbour system | 1 |
| Lagos lagoon | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2534066 — 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: Lagos Lagoon Context triple: [Apapa Port, locatedOnWaterbody, Lagos Lagoon]
-
A.
Iligan Bay
Iligan Bay is a coastal bay in the southern Philippines known for bordering the northern coast of Mindanao and serving as an important fishing and maritime area.
-
B.
Bight of Biafra
The Bight of Biafra is a large bay on the easternmost part of the Gulf of Guinea along the West African coast, bordering countries such as Nigeria and Cameroon and historically significant in Atlantic trade routes.
-
C.
Bight of Benin
The Bight of Benin is a broad bay on the West African coast along the Gulf of Guinea, bordered by countries such as Ghana, Togo, Benin, and Nigeria and historically known for its role in the transatlantic slave trade.
-
D.
Iligan
Iligan is a highly urbanized coastal city in the northern part of Mindanao in the Philippines, known for its numerous waterfalls and industrial economy.
-
E.
Warri
Warri is a prominent oil-producing and commercial city in southern Nigeria that serves as a key economic hub of the Niger Delta region.
- 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: Lagos Lagoon Target entity description: Lagos Lagoon is a large coastal lagoon in southwestern Nigeria that forms part of the Lagos harbor system and plays a central role in the region’s transportation, commerce, and ecology.
-
A.
Iligan Bay
Iligan Bay is a coastal bay in the southern Philippines known for bordering the northern coast of Mindanao and serving as an important fishing and maritime area.
-
B.
Bight of Biafra
The Bight of Biafra is a large bay on the easternmost part of the Gulf of Guinea along the West African coast, bordering countries such as Nigeria and Cameroon and historically significant in Atlantic trade routes.
-
C.
Bight of Benin
The Bight of Benin is a broad bay on the West African coast along the Gulf of Guinea, bordered by countries such as Ghana, Togo, Benin, and Nigeria and historically known for its role in the transatlantic slave trade.
-
D.
Iligan
Iligan is a highly urbanized coastal city in the northern part of Mindanao in the Philippines, known for its numerous waterfalls and industrial economy.
-
E.
Warri
Warri is a prominent oil-producing and commercial city in southern Nigeria that serves as a key economic hub of the Niger Delta region.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
coastal lagoon
ⓘ
lagoon ⓘ |
| area | approximately 6,354 square kilometres ⓘ |
| averageDepth | less than 2 metres ⓘ |
| basinCountry | Nigeria ⓘ |
| bodyOfWaterType | brackish water ⓘ |
| borderedBy |
freshwater wetlands
ⓘ
mangrove swamps ⓘ |
| cityOnBodyOfWater |
Epe
ⓘ
Ikorodu ⓘ Lagos ⓘ |
| connectedTo |
Atlantic Ocean
ⓘ
Lagos Harbour ⓘ Lekki ⓘ
surface form:
Lekki Lagoon
Ologe Lagoon ⓘ Yewa Lagoon ⓘ |
| country | Nigeria ⓘ |
| crossedBy |
Carter Bridge
ⓘ
Eko Bridge ⓘ Third Mainland Bridge ⓘ |
| ecologicalRole |
feeding and roosting area for waterbirds
ⓘ
important habitat for fish and shellfish ⓘ |
| hasIsland |
Apapa Port
ⓘ
surface form:
Apapa
Ikoyi ⓘ Lagos Island ⓘ Victoria Island ⓘ |
| inflow |
Aye River
ⓘ
Badagry Creek ⓘ Ijede Creek ⓘ Ogun River ⓘ Oshun River ⓘ Yewa River ⓘ |
| length | approximately 50 kilometres ⓘ |
| locatedIn |
Lagos State
ⓘ
Western Nigeria ⓘ
surface form:
Southwestern Nigeria
|
| locatedNear |
Lekki
ⓘ
surface form:
Lekki Peninsula
|
| locatedOn | Gulf of Guinea ⓘ |
| maximumWidth | approximately 13 kilometres ⓘ |
| outflow | Atlantic Ocean ⓘ |
| partOf |
Lagos Lagoon
self-linksurface differs
ⓘ
surface form:
Lagos harbour system
|
| separatedFrom | Atlantic Ocean by Lagos Bar Beach barrier island ⓘ |
| threatenedBy |
domestic sewage discharge
ⓘ
industrial pollution ⓘ land reclamation ⓘ oil spills ⓘ solid waste dumping ⓘ |
| usedFor |
domestic water supply in surrounding communities
ⓘ
fishing ⓘ sand mining ⓘ water transport ⓘ |
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: Lagos Lagoon Description of subject: Lagos Lagoon is a large coastal lagoon in southwestern Nigeria that forms part of the Lagos harbor system and plays a central role in the region’s transportation, commerce, and ecology.
Referenced by (35)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lagos lagoon
this entity surface form:
Bay of Lagos
this entity surface form:
Lagos coastline
this entity surface form:
Lagos harbour system
subject surface form:
Eti-Osa Local Government Area
subject surface form:
Lekki–Ikoyi Link Bridge
this entity surface form:
Lagos Lagoon system
this entity surface form:
Lagos Lagoon island cluster
this entity surface form:
Lagos Lagoon area
this entity surface form:
Lagos Lagoon system