20202
In large conglomerates , size and complexity is the enemy , '' said Bruce Greenwald , professor of economics at the business school at Columbia University , where he teaches a course on the media . ''
 person of company: Bruce Greenwald, Columbia 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:  Bruce Greenwald, Columbia University 
Answer:
 person of company: Bruce Greenwald, Columbia University