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Since 2007 , he has been the Professor of Ancient Philosophy at the University of Oxford , and Fellow of Keble College , Oxford , where he succeeded Michael Frede .
 organization: University of Oxford; organization: Keble College , Oxford; person: Michael Frede
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: University of Oxford, Keble College , Oxford, Michael Frede 
Answer:
 organization: University of Oxford; organization: Keble College , Oxford; person: Michael Frede