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In March 2012 Plowman announced her candidacy for the  Republican  Party's nomination for U.S. Senator to replace the retiring  Olympia Snowe  .
 employee of: Republican, Olympia Snowe
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:  Republican, Olympia Snowe 
Answer:
 employee of: Republican, Olympia Snowe