5977
From 1966 he taught at the Leningrad Conservatory first as a teacher then from 1973 as a professor .
 organization: Leningrad Conservatory
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Leningrad Conservatory