Premise: Seth MacFarlane . MacFarlane is the creator of the TV series Family Guy ( 1999 -- 2003 , 2005 -- present ) , co-creator of the TV series American Dad ! ( 2005 -- present ) and The Cleveland Show ( 2009 -- 13 ) . Recruited to Hollywood , he was an animator and writer for Hanna-Barbera for several television series , including Johnny Bravo , Cow and Chicken , Dexter 's Laboratory , I Am Weasel , and Larry & Steve . In 2008 , he created his own YouTube series titled Seth MacFarlane 's Cavalcade of Cartoon Comedy .
Hypothesis: Seth MacFarlane only worked on The Simpsons.
Label: CONTRADICTION