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On August 13 2007 Merkley received the endorsements of Democratic Governor Ted Kulongoski and former Democratic Governor Barbara Roberts.Kulongoski Roberts to Co-Chair Merkley for Senate Campaign  Jeff Merkley  for U.S. Senate Oregon He was endorsed in December 2007 by the  Oregon  AFL-CIO the state's largest labor federation .
 Jeff Merkley, Oregon
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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} 
Answer:
 Jeff Merkley, Oregon