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 Martin Feldstein , a professor of economics at Harvard and the president of the National Bureau of Economic Research , said in a statement issued by Harvard , '' Richard Musgrave transformed economics in the 1950s and 1960s from a descriptive and institutional subject to one that used the tools of microeconomics and Keynesian macroeconomics to understand the effect of taxes . '' 
 company: Martin Feldstein, National Bureau of Economic Research
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: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 company: Martin Feldstein, National Bureau of Economic Research