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In 1968  Canada  unified its military forces when it merged the Canadian Army Royal Canadian Air Force and Royal Canadian Navy to create the  Canadian Forces  .
 country of headquarters: Canada, Canadian 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:  Canada, Canadian Forces 
Answer:
 country of headquarters: Canada, Canadian Forces