194984
He participated in germ warfare research at U.S. Army Medical Unit ( USAMU ) , Fort Detrick , Frederick , Maryland .
 organization: U.S. Army; location: Frederick; location: Maryland
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: U.S. Army, Frederick, Maryland 
Answer:
 organization: U.S. Army; location: Frederick; location: Maryland