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He was one of 11 American pilots who flew with RAF Fighter Command between 10 July and 31 October 1940 , thereby qualifying for the Battle of Britain clasp to the 1939 – 45 campaign star .
 organization: Fighter Command
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: Fighter Command 
Answer:
 organization: Fighter Command