37848
The orchestra at the Juilliard School , which he attended on the G.I. Bill of Rights , also included Ray Still and John Mack , who both went on to stardom as principal players at the Chicago Symphony Orchestra and the Cleveland Orchestra , respectively .
 person of company: John Mack, Juilliard School
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:  John Mack, Juilliard School 
Answer:
 person of company: John Mack, Juilliard School