PARIS – The Workforce that showed up Sunday at Longchamp was not the King George VI and Queen Elizabeth Stakes flop, but it was the record-setting winner of the Epsom Derby. In a remarkable feat of training, Michael Stoute nurtured a superb performance out of the enigmatic Workforce to win the $5.33 million Prix de l’Arc de Triomphe, setting off scenes of joy by his numerous British backers who had banged him down to 6.60-1 shortly before post time.