Question: BARGE, the Big August Rec.Gambling Excursion, is a yearly convention held in Las Vegas during the first weekend of August,, some of the well-known poker players who have participated either as speakers or players in the no limit holdem tournament including which American poker player who has played professionally for over 50 years.?
{'answer': 'Doyle F. Brunson', 'supporting_facts': [['BARGE', 2], ['Doyle Brunson', 0]]}