Anchor: Two students try to walk a tightrope on a campus quad, but one falls off.
Entailed: Someone falls from a tightrope.
Contradiction: Both students make it across the tightrope on a campus quad.
Contradiction: A pair of girls are playing with dolls
Contradiction: It wasn't smart to visit in the afternoons on hot days because of all the stairs you had to climb.
Contradiction: A kids is running and jump inside the house.
Contradiction: A witness' credibility is affected by his presentation.