premise: Young girl, sliding down a slip and slide causing a splash, at the end. hypothesis: A girl goes down the biggest water-slide at the park and causes a massive splash when she hits the pool.
neutral: That this happens at the park, and on the biggest water slide is not implied by the young girl sliding down a slip and slide.  That she caused a splash at the end does not mean it was massive or that it occurred when she hit the pool.