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He has produced concert shows with performances by NSYNC , Britney Spears , Whitney Houston , Backstreet Boys and many others .
 person: Britney Spears; person: Whitney Houston
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: Britney Spears, Whitney Houston 
Answer:
 person: Britney Spears; person: Whitney Houston