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In the Republican address  Kansas  Sen.  Pat Roberts  said Obama should n't have bypassed the Senate to appoint Donald Berwick as administrator of the Centers for Medicare and Medicaid Services the agency that administers health programs for the elderly and low-income Americans .
 employee of: Kansas, Pat Roberts
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:  Kansas, Pat Roberts 
Answer:
 employee of: Kansas, Pat Roberts