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Paul Krugman , a Princeton University economist and Op-Ed columnist for The New York Times , said Mr. Friedman then managed '' one of the decisive intellectual achievements of postwar economics , '' predicting the combination of rising unemployment and rising inflation that came to be called stagflation .
 person of company: Paul Krugman, Princeton University
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Paul Krugman, Princeton University 
Answer:
 person of company: Paul Krugman, Princeton University