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Osun State was formed on 1991-08-27 when it was split from Oyo State .
 location: Osun State; location: Oyo State
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Osun State, Oyo State 
Answer:
 location: Osun State; location: Oyo State