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It has been suggested that the Black Buck raids were pressed home by the  Royal Air Force  because the British armed forces had been cut in the late seventies and the  RAF  may have desired a greater role in the conflict to prevent further cuts .
 alternate names: Royal Air Force, RAF
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 alternate names: Royal Air Force, RAF