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Peter Cullen ... liked to be down and dirty in the swamp .... When he retired from his academic post , it appeared to me that there was ... no change in his work regime and he appeared to be busier than ever . "
 person: Cullen
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: Cullen 
Answer:
 person: Cullen