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The economic slowdown has to be much more substantial than anybody in the Federal Reserve or on Wall Street is expecting , '' said Robert J. Gordon , a professor of economics at Northwestern University , who has analyzed the trade-off between inflation and unemployment for the last several decades .
 person of company: Robert J. Gordon, Northwestern University
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: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 person of company: Robert J. Gordon, Northwestern University