165099
On his return to Japan , he served in various administrative and staff positions within the Imperial Army General Staff Office .
 organization: Imperial; organization: Staff
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: Imperial, Staff 
Answer:
 organization: Imperial; organization: Staff