Anchor: Two men are observing a chemical reaction.
Entailed: Two men watch a chemical reaction.
Contradiction: Two men in black lab coats watch some mice do circles.
Contradiction: Nobody is sweating in the gym, because they use the new sweat proof costumes.
Contradiction: There are occasions when a man can do something that can never be forgiven.
Contradiction: The child is walking.
Contradiction: A girl is eating.