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Raymond Carey Bush is a professor of African Studies at the School of Politics and International Studies ( POLIS ) at the University of Leeds .
 person: Bush; organization: University of Leeds
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: Bush, University of Leeds 
Answer:
 person: Bush; organization: University of Leeds