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Maine's political parties are relatively weak and she is beholden to neither ; her nonideological approach adheres to the political formula adopted by successful senators from  Maine  for 60 years from Margaret Chase Smith to George Mitchell to the state's junior senator  Susan Collins  said Christian Potholm a government professor at Bowdoin College .
 state or provinces of residence: Maine, Susan Collins
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:  Maine, Susan Collins 
Answer:
 state or provinces of residence: Maine, Susan Collins