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His fields of specialty include low surface brightness galaxies , galaxy formation and evolution , tests of dark matter and alternative hypotheses , and measurements of cosmological parameter s. Stacy McGaugh was an undergraduate student at MIT ( S.B. 1985 ) and a graduate student at Princeton and the University of Michigan ( Ph.D. 1992 ) .
 person: Stacy McGaugh; organization: MIT; organization: Princeton; 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: Stacy McGaugh, MIT, Princeton, University of Michigan 
Answer:
 person: Stacy McGaugh; organization: MIT; organization: Princeton; organization: University of Michigan