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Mr. Gates 's most direct statements about Iraq came during exchanges with Senators Carl Levin , the Michigan Democrat who will take over as the panel 's chairman , and John McCain of Arizona , who will become the top-ranking Republican . ''
 John McCain, Arizona
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:
 John McCain, Arizona