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Ruth Harkin wife of Democratic Sen.  Tom Harkin  of Iowa is a member of the  Iowa  Board of Regents which oversees the state-run universities and she also sits on the board of directors of Houston-based ConocoPhillips .
 state or provinces of residence: Tom Harkin, Iowa
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:  Tom Harkin, Iowa 
Answer:
 state or provinces of residence: Tom Harkin, Iowa