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Robert " Rob " Woodhouse ( born 23 June 1966 ) is a former Australian Olympic swimmer , specializing in medley swimming .
 person: Rob; person: Woodhouse
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: Rob, Woodhouse 
Answer:
 person: Rob; person: Woodhouse