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The chairman of the Senate Agriculture Committee Democratic Sen.  Tom Harkin  of  Iowa  has supported this approach and encouraged spending more money on conservation programs .
 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