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Martin Feldstein  a professor of economics at Harvard University and president emeritus of the nonprofit National Bureau of Economic Research was chairman of the  Council of Economic Advisers  from 1982 to 1984 .
 employee of: Martin Feldstein, Council of Economic Advisers
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:
 employee of: Martin Feldstein, Council of Economic Advisers