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Previously he has held visiting positions at the Istituto Italiano di Scienze Umane , the University of Florence , the University of Michigan , the University of Illinois , Northwestern University , the European University Institute in Florence , the University of Antwerp , and Leti University at St. Petersburg .
 organization: University of Florence; organization: University of Michigan; organization: University of Illinois; organization: Northwestern University; organization: Florence; organization: University of Antwerp
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 Florence, University of Michigan, University of Illinois, Northwestern University, Florence, University of Antwerp 
Answer:
 organization: University of Florence; organization: University of Michigan; organization: University of Illinois; organization: Northwestern University; organization: Florence; organization: University of Antwerp