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Since the Spadina extension had been first drawn up the  TTC  proposed  Vaughan  Corporate Centre as the station name and this is the name that the TTC still today uses in all their construction references .
 alternate names: TTC, Vaughan
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:  TTC, Vaughan 
Answer:
 alternate names: TTC, Vaughan