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YouTube did n't violate  Viacom  copyrights when content including clips from its  MTV  and Comedy Central cable television channels were posted on the video - sharing website a judge has ruled .
 Viacom, MTV
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Viacom, MTV