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In the 1980s he worked at the Institute of General and Pedagogical Psychology in Moscow under Vasily Davydov .
 person: Vasily Davydov
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: Vasily Davydov 
Answer:
 person: Vasily Davydov