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A survivor of Armenian Genocide , he came to Yerevan in 1923 , where he taught foreign languages , comparative grammar , and the history of the Armenian language at the Yerevan State University , headed a cafedra .
 organization: Armenian; location: Yerevan; organization: Armenian; organization: Yerevan State University
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: Armenian, Yerevan, Armenian, Yerevan State University 
Answer:
 organization: Armenian; location: Yerevan; organization: Armenian; organization: Yerevan State University