197841
After his graduation in 1920 from the law school of Tokyo Imperial University , he entered the Home Ministry .
 organization: Tokyo Imperial 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: Tokyo Imperial University 
Answer:
 organization: Tokyo Imperial University