premise: Two basketball players on opposing teams, one in white, the other in red, are mid-game, running down the court, white-uniform player with ball-in-hand. hypothesis: A group of people are water skiing.
contradiction: Two does not equal a group. The people can not be playing basketball and water skiing at the same time.|contradiction: A group of people who are water skiing are not at the same time running down a basketball court.|contradiction: court doesn't mean skiing.