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Following his break with Morgunov , Gaidai disbanded the trio , while casting Nikulin in what was to become the most popular Soviet comedy ever made , The Diamond Arm ( 1968 ) .
 person: Morgunov; person: Gaidai; person: Nikulin
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: Morgunov, Gaidai, Nikulin 
Answer:
 person: Morgunov; person: Gaidai; person: Nikulin