Anchor: A man wearing a life jacket and helmet is water rafting down a river.
Entailed: There is a man in the water.
Contradiction: The woman struggles to stay afloat in the deep water.
Contradiction: Considering the facts, I can say we are not in love. 
Contradiction: A man hit the ball during the tennis competition.
Contradiction: The man is sitting on a bus.
Contradiction: A woman is having her hair fixed.