Anchor: Four people are sitting at a picnic bench eating while a fifth man stands next to the bench.
Entailed: There is a picnic bench and people are either sitting on it or next to it.
Contradiction: Five people are enjoying a picnic together.
Contradiction: Four people are dead on the ground.
Contradiction: The man is waiting to steal their food.
Contradiction: Competitors race cars on a road.
Contradiction: The people are driving their cars to work.