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One of his earliest tours was with Nikka Costa , opening for Prince on his Musicology tour .
 person: Nikka Costa; person: Prince
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: Nikka Costa, Prince 
Answer:
 person: Nikka Costa; person: Prince