6720
Michael  described his situation as professional slavery because his contract required that he produce music and cede the copyright to  Sony  for many years leaving him no control over how the music would be marketed nor placing a reciprocal requirement that the label invest in promotion .
 employee of: Michael, Sony
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: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 employee of: Michael, Sony