premise: A male Equestrian rider leans forward as his horse stretches out for the 2nd jump of the course, as the crowd looks on with amazement. hypothesis: A man is standing next to his horse waiting for the event to begin.
contradiction: A man cannot lean forward as his horse stretches out for the 2nd jump of the course while also standing next to his horse waiting for the event to begin. The first action directly takes place during the race while the second happens before it starts.