8299
He was previously CEO chairman and co-founder ( with brother  Gary  ) of   Software a major software publishing firm that produced such hit titles as Myst Where in the World is Carmen Sandiego ?
 founded by: Gary, 
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:
 founded by: Gary, 