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Zehrs stores have been known in  Ontario  by three distinct names :  Zehrs Markets  Zehrs Food Plus and Zehrs Greatfood ( similar to the new Loblaw Greatfood locations opened in the Greater Toronto Area ) .
 city of headquarters: Ontario, Zehrs Markets
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:  Ontario, Zehrs Markets 
Answer:
 city of headquarters: Ontario, Zehrs Markets