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Greyhound Canada  with its headquarters in Calgary is a subsidiary of Britain's  FirstGroup  linked with the Dallas-based Greyhound Lines .
 subsidiaries: Greyhound Canada, FirstGroup
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:  Greyhound Canada, FirstGroup 
Answer:
 subsidiaries: Greyhound Canada, FirstGroup