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Moukhin is known for his photographs of Soviet rock musicians of the perestroika period , including Viktor Tsoi , Boris Grebenshikov , Petr Mamonov , among others .
 person: Moukhin; person: Viktor Tsoi; person: Boris Grebenshikov; person: Petr Mamonov
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: Moukhin, Viktor Tsoi, Boris Grebenshikov, Petr Mamonov 
Answer:
 person: Moukhin; person: Viktor Tsoi; person: Boris Grebenshikov; person: Petr Mamonov