7654
In 1991 Ackerman and Nelsen started designing and building Imaginary Road Studios originally intended for work on Ackerman's own recordings and his spoken word label Gang of Seven formed after he sold  his  stake in  Windham Hill  .
 employee of: his, Windham Hill
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: his, Windham Hill