5977
From 1966 he taught at the Leningrad Conservatory first as a teacher then from 1973 as a professor .
 organization: Leningrad Conservatory
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: Leningrad Conservatory 
Answer:
 organization: Leningrad Conservatory