Western State, Nigeria
E286190
Western State, Nigeria was a former administrative region in southwestern Nigeria that existed from 1967 to 1976 before being divided into several smaller states, including Oyo State.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Odu’a States of Nigeria | 1 |
| Western State (Nigeria) | 1 |
| Western State, Nigeria canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2640815 — 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: Western State, Nigeria Context triple: [Oyo State, createdFrom, Western State, Nigeria]
-
A.
Kogi State
Kogi State is a centrally located Nigerian state often called the “Confluence State” because it is where the Niger and Benue rivers meet, and it is home to a significant Yoruba population alongside other ethnic groups.
-
B.
Imo State
Imo State is a southeastern Nigerian state known for its oil-rich economy, dense population, and cultural heritage of the Igbo people.
-
C.
Nasarawa State
Nasarawa State is a centrally located state in Nigeria known for its diverse ethnic groups, agricultural activities, and proximity to the Federal Capital Territory, Abuja.
-
D.
Taraba State
Taraba State is a largely agrarian and ethnically diverse state in northeastern Nigeria, known for its mountainous terrain, the Mambilla Plateau, and significant agricultural production.
-
E.
Plateau State
Plateau State is a centrally located Nigerian state known for its cool climate, scenic highlands, and diverse ethnic communities.
- 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: Western State, Nigeria Target entity description: Western State, Nigeria was a former administrative region in southwestern Nigeria that existed from 1967 to 1976 before being divided into several smaller states, including Oyo State.
-
A.
Kogi State
Kogi State is a centrally located Nigerian state often called the “Confluence State” because it is where the Niger and Benue rivers meet, and it is home to a significant Yoruba population alongside other ethnic groups.
-
B.
Imo State
Imo State is a southeastern Nigerian state known for its oil-rich economy, dense population, and cultural heritage of the Igbo people.
-
C.
Nasarawa State
Nasarawa State is a centrally located state in Nigeria known for its diverse ethnic groups, agricultural activities, and proximity to the Federal Capital Territory, Abuja.
-
D.
Taraba State
Taraba State is a largely agrarian and ethnically diverse state in northeastern Nigeria, known for its mountainous terrain, the Mambilla Plateau, and significant agricultural production.
-
E.
Plateau State
Plateau State is a centrally located Nigerian state known for its cool climate, scenic highlands, and diverse ethnic communities.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
former administrative division
ⓘ
former state of Nigeria ⓘ |
| adminCenter | Ibadan ⓘ |
| capital | Ibadan ⓘ |
| commonLanguage | Yoruba ⓘ |
| country | Nigeria ⓘ |
| createdBy | Federal Military Government of Nigeria ⓘ |
| createdUnder |
Yakubu Gowon
ⓘ
surface form:
General Yakubu Gowon
|
| dissolvedOn | 1976-02-03 ⓘ |
| endDate | 1976-02-03 ⓘ |
| existedFrom | 1967 ⓘ |
| existedUntil | 1976 ⓘ |
| followed |
Western Nigeria
ⓘ
surface form:
Western Region, Nigeria
|
| governmentType | military-administered state ⓘ |
| hasCapitalCity | Ibadan ⓘ |
| historicalRegion |
Western Nigeria
ⓘ
surface form:
Yorubaland
|
| legalBasisForAbolition | 1976 state creation decree of Nigeria ⓘ |
| legalBasisForCreation | 1967 state creation decree of Nigeria ⓘ |
| locatedIn | Nigeria ⓘ |
| locatedInRegion |
Western Nigeria
ⓘ
surface form:
Southwestern Nigeria
|
| majorEthnicGroup | Yoruba people ⓘ |
| officialLanguage | English ⓘ |
| partlyReorganizedInto |
Ogun State
ⓘ
Ondo State ⓘ Oyo State ⓘ |
| partOf |
Nigeria
ⓘ
surface form:
Federal Republic of Nigeria
|
| predecessorEntity |
Western Nigeria
ⓘ
surface form:
Western Region, Nigeria
|
| reasonForDissolution | 1976 Nigerian state creation and local government reforms ⓘ |
| regionType | state-level administrative unit ⓘ |
| replaced |
Western Nigeria
ⓘ
surface form:
Western Region, Nigeria
|
| startDate | 1967-05-27 ⓘ |
| status | defunct ⓘ |
| subdivisionOf | Nigeria ⓘ |
| succeededBy |
Lagos State
ⓘ
surface form:
Lagos State (partly, earlier separated)
Ogun State ⓘ Ondo State ⓘ Oyo State ⓘ |
| territoryIncluded |
areas of present-day Ogun State
ⓘ
areas of present-day Ondo State ⓘ areas of present-day Oyo State ⓘ parts of present-day Lagos State (before earlier separation) ⓘ |
| timePeriod | Nigerian military era (1966–1979) ⓘ |
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: Western State, Nigeria Description of subject: Western State, Nigeria was a former administrative region in southwestern Nigeria that existed from 1967 to 1976 before being divided into several smaller states, including Oyo State.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Western State (Nigeria)
this entity surface form:
Odu’a States of Nigeria