table: [['rank', 'nation', 'gold', 'silver', 'bronze', 'total'], ['1', 'mexico', '1', '0', '0', '1'], ['1', 'united states', '1', '0', '0', '1'], ['3', 'brazil', '0', '1', '0', '1'], ['3', 'japan', '0', '1', '0', '1'], ['5', 'canada', '0', '0', '1', '1'], ['5', 'south korea', '0', '0', '1', '1'], ['total', 'total', '2', '2', '2', '6']]
ref: no single country won more than 1 medal in the sport of Football in 2012
template: no single country won more than 1 medal in the sport of [ENT] in [ENT]