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The  Republic of Singapore Air Force  ( RSAF ; ; ) is the air arm of the  Singapore Armed Forces  .
 subsidiaries: Republic of Singapore Air Force, Singapore Armed Forces
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Republic of Singapore Air Force, Singapore Armed Forces 
Answer:
 subsidiaries: Republic of Singapore Air Force, Singapore Armed Forces