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Top Finance Republican Sen.  Chuck Grassley  of  Iowa  the Republican's key negotiator said this week that he 'd have to take his constituents ' concerns into consideration in continuing talks .
 state or provinces of residence: Chuck Grassley, Iowa
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 state or provinces of residence: Chuck Grassley, Iowa