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The  Gastonia Transit  System or GT is the public transit system in  Gastonia  North Carolina U.S .
 city of headquarters: Gastonia Transit, Gastonia
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:  Gastonia Transit, Gastonia 
Answer:
 city of headquarters: Gastonia Transit, Gastonia