13792
The network is the oldest unit of the  CBS  Corporation and traces its roots to CBS's predecessor United Independent Broadcasters founded in  1927  with 47 affiliates .
 founded: CBS, 1927
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: CBS, 1927