188001
Following the Russian Civil War , he enrolled at the school of the Moscow Art Theatre , where his classmates included Mikhail Kedrov and Boris Livanov .
 organization: Moscow Art Theatre; person: Mikhail Kedrov; person: Boris Livanov
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: Moscow Art Theatre, Mikhail Kedrov, Boris Livanov 
Answer:
 organization: Moscow Art Theatre; person: Mikhail Kedrov; person: Boris Livanov