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Dr Pollard is formerly the Chair of Executive and Head , Department of Medicine , University of Sydney ; the Professor of Clinical Neurosciences , University of Sydney ; and , from 1997 , the Bushell Professor of Neurology at University of Sydney , a role from which he retired in 2008 .
 person: Pollard; organization: University of Sydney; organization: University of Sydney; organization: University of Sydney
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: Pollard, University of Sydney, University of Sydney, University of Sydney 
Answer:
 person: Pollard; organization: University of Sydney; organization: University of Sydney; organization: University of Sydney