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Senators John W. Warner of Virginia , who is chairman of the Armed Services Committee , and John McCain of Arizona also are expected to be at the forefront for the Republicans , while Senator Carl Levin of Michigan is quite likely to emerge as a point man for the Democrats .
 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