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He went on to be Senior Air Staff Officer at Headquarters RAF Strike Command in 1971 , Commandant of the RAF Staff College , Bracknell , in 1972 and Air Member for Supply and Organisation in 1976 .
 Staff, RAF Strike Command, RAF Staff
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Staff, RAF Strike Command, RAF Staff