39563
He was a strong proponent of military aviation , and after his promotion to colonel in 1921 , became the first head of the Imperial Japanese Army Air Service in 1922 .
 organization: Imperial Japanese Army Air Service
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 Japanese Army Air Service 
Answer:
 organization: Imperial Japanese Army Air Service