Sokoto Basin
E733804
The Sokoto Basin is a large sedimentary basin in northwestern Nigeria known for its extensive Cretaceous–Tertiary rock formations and significant groundwater and mineral resources.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Sokoto Basin canonical | 1 |
| Sokoto floodplain | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8437127 — 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: Sokoto Basin Context triple: [Sokoto River, associatedWith, Sokoto Basin]
-
A.
Southern Niger
Southern Niger is a predominantly Hausa-inhabited region of Niger known for its dense population, agricultural activity, and role as a cultural and economic heartland of the country.
-
B.
North West Nigeria
North West Nigeria is a geopolitical zone of Nigeria comprising several predominantly Hausa-speaking states, known for its large population, historic emirates, and significant role in the country’s politics and agriculture.
-
C.
Hadejia Emirate
Hadejia Emirate is a traditional Islamic state and historic Hausa-Fulani polity in present-day northern Nigeria that emerged as one of the constituent emirates of the Sokoto Caliphate.
-
D.
Agadez Region
Agadez Region is a vast, sparsely populated administrative area in northern Niger, known for its desert landscapes, Tuareg culture, and historic trans-Saharan trade routes.
-
E.
Ogoniland
Ogoniland is an oil-rich coastal region in Nigeria’s Niger Delta, known for its Ogoni inhabitants and for severe environmental degradation linked to decades of petroleum extraction.
- 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: Sokoto Basin Target entity description: The Sokoto Basin is a large sedimentary basin in northwestern Nigeria known for its extensive Cretaceous–Tertiary rock formations and significant groundwater and mineral resources.
-
A.
Southern Niger
Southern Niger is a predominantly Hausa-inhabited region of Niger known for its dense population, agricultural activity, and role as a cultural and economic heartland of the country.
-
B.
North West Nigeria
North West Nigeria is a geopolitical zone of Nigeria comprising several predominantly Hausa-speaking states, known for its large population, historic emirates, and significant role in the country’s politics and agriculture.
-
C.
Hadejia Emirate
Hadejia Emirate is a traditional Islamic state and historic Hausa-Fulani polity in present-day northern Nigeria that emerged as one of the constituent emirates of the Sokoto Caliphate.
-
D.
Agadez Region
Agadez Region is a vast, sparsely populated administrative area in northern Niger, known for its desert landscapes, Tuareg culture, and historic trans-Saharan trade routes.
-
E.
Ogoniland
Ogoniland is an oil-rich coastal region in Nigeria’s Niger Delta, known for its Ogoni inhabitants and for severe environmental degradation linked to decades of petroleum extraction.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
geological basin
ⓘ
sedimentary basin ⓘ |
| climateType | semi-arid ⓘ |
| containsFossilsOf |
dinosaurs
ⓘ
invertebrates ⓘ marine organisms ⓘ |
| country | Nigeria ⓘ |
| dominantLithology |
limestone
ⓘ
sandstone ⓘ shale ⓘ |
| drainedBy |
Kaduna River
NERFINISHED
ⓘ
Rima River NERFINISHED ⓘ Sokoto River NERFINISHED ⓘ |
| economicUse |
cement production
ⓘ
groundwater supply ⓘ phosphate fertilizer production ⓘ |
| extendsInto |
Benin
NERFINISHED
ⓘ
Niger NERFINISHED ⓘ |
| geologicalPeriod |
Eocene
NERFINISHED
ⓘ
Late Cretaceous ⓘ Miocene NERFINISHED ⓘ Oligocene NERFINISHED ⓘ Paleocene NERFINISHED ⓘ |
| hasAquifer |
confined sandstone aquifer
ⓘ
shallow unconfined aquifer ⓘ |
| hasResourceType |
clay
ⓘ
groundwater ⓘ gypsum ⓘ ironstone ⓘ limestone ⓘ phosphate ⓘ |
| hasRockAge |
Cretaceous
NERFINISHED
ⓘ
Neogene NERFINISHED ⓘ Paleogene ⓘ Tertiary ⓘ |
| hasStratigraphicUnit |
Dange Formation
NERFINISHED
ⓘ
Dukamaje Formation NERFINISHED ⓘ Gundumi Formation NERFINISHED ⓘ Gwandu Formation NERFINISHED ⓘ Illo Group NERFINISHED ⓘ Kalambaina Formation NERFINISHED ⓘ Rima Group NERFINISHED ⓘ Sokoto Group NERFINISHED ⓘ Taloka Formation NERFINISHED ⓘ Wurno Formation NERFINISHED ⓘ |
| locatedIn |
West Africa
NERFINISHED
ⓘ
northwestern Nigeria NERFINISHED ⓘ |
| namedAfter | Sokoto NERFINISHED ⓘ |
| partOf | Iullemmeden Basin NERFINISHED ⓘ |
| region |
Kebbi State
NERFINISHED
ⓘ
Sokoto State NERFINISHED ⓘ Zamfara State NERFINISHED ⓘ |
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: Sokoto Basin Description of subject: The Sokoto Basin is a large sedimentary basin in northwestern Nigeria known for its extensive Cretaceous–Tertiary rock formations and significant groundwater and mineral resources.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Sokoto floodplain