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Nikolai Erdman ( famous for his work with Vsevolod Meyerhold in the 1920s ) was responsible for the theatre repertoire .
 person: Nikolai Erdman; person: Vsevolod Meyerhold
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: Nikolai Erdman, Vsevolod Meyerhold 
Answer:
 person: Nikolai Erdman; person: Vsevolod Meyerhold