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The success of the new Medicare law depends on a robust partnership between government and the private sector , '' said Stacey Hughes , a partner in the lobbying firm established by former Senator Don Nickles , Republican of Oklahoma .
 Don Nickles, Oklahoma
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:
 Don Nickles, Oklahoma