Question: In the 18th AVN Awards ceremony, what adult film star and  American entrepreneur, webcam model and former pornographic film actress, who has been called the world's most famous adult entertainment performer and "The Queen of Porn", hosted the show for the second time?
{'answer': 'Jenna Jameson', 'supporting_facts': [['18th AVN Awards', 0], ['18th AVN Awards', 3], ['Jenna Jameson', 0]]}