Question: What channel did the two South Park episodes "Cartman's Mom Is a Dirty Slut" and "Cartman's Mom Is Still a Dirty Slut" premier on in the United States ?
{'answer': 'Comedy Central', 'supporting_facts': [["Cartman's Mom Is Still a Dirty Slut", 1], ["Cartman's Mom Is a Dirty Slut", 1]]}