premise: A woman player in white and black, sends the volleyball over the net, while the opposing team in navy blue, tries to block it, as the coach and a few spectators watch, in a gym. hypothesis: There is  no volleyball.
contradiction: A woman cannot send the volleyball if there is no volleyball.|contradiction: If a woman sends the volleyball over the net and another team tries to block it, then it is inaccurate to claim that there is no volleyball being played.|contradiction: The woman is playing volleyball, but there is no volleyball.