204047
He joined the Army Medical Corps during World War I and attained the rank of 1st Lieutenant .
 organization: Army Medical Corps
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: Army Medical Corps 
Answer:
 organization: Army Medical Corps