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Air Vice Marshal Sir George Ranald MacFarlane Reid KCB , DSO , MC & Bar ( 25 October 1893 – 19 May 1991 ) was a senior officer of the Royal Air Force .
 Reid, Royal Air Force
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Reid, Royal Air Force