13703
Gregory Mosher , a Tony Award winning producer and director , and director of University Arts Initiatives at Columbia University , has known Mr. Nelson since 1977 , when both men were in their 20 's and working in Chicago , Mr. Nelson 's hometown . ''
 person of company: Gregory Mosher, 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:  Gregory Mosher, Columbia University 
Answer:
 person of company: Gregory Mosher, Columbia University