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Prettyman won a record eight varsity letter s at the University of Michigan , playing for the school 's football team from 1882 to 1886 and 1888 to 1890 .
 person: Prettyman; organization: University of Michigan
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: Prettyman, University of Michigan 
Answer:
 person: Prettyman; organization: University of Michigan