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The next president will be chosen next summer from among the left-wing former mayor of Mexico City , a conservative former energy minister who has promised to crack down on crime and an old-fashioned political boss in the PRI party machine that ruled Mexico with no small amount of fraud and corruption for seven decades .
 Mexico, Mexico City; Mexico, Mexico City; Mexico, Mexico City; Mexico City, Mexico
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 Mexico, Mexico City; Mexico, Mexico City; Mexico, Mexico City; Mexico City, Mexico