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He is an Associate of the Center for the Study of Civil War at the Peace Research Institute Oslo .
 organization: Peace Research Institute Oslo
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: Peace Research Institute Oslo 
Answer:
 organization: Peace Research Institute Oslo