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Hussein made his official debut at the 2000 Summer Olympics in Sydney , where he competed in the men 's 200 m backstroke .
 person: Hussein; location: 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: Hussein, Sydney 
Answer:
 person: Hussein; location: Sydney