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Kristian 's big break internationally came with the song " Quit Playing Games ( with My Heart ) " which he co-produced with Max Martin for the Backstreet Boys .
 person: Kristian; person: Max Martin
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: Kristian, Max Martin 
Answer:
 person: Kristian; person: Max Martin