Anchor: One boxer attempts to punch his defensive opponent with a fierce expression on his face.
Entailed: One boxer looks fierce.
Contradiction: One black boxer sits and listens to his coach.
Contradiction: Two friends sit in a cafe drinking coffee.
Contradiction: Even if mailers decide the base of differing prices, they engage in drop shipping. 
Contradiction: She is a panda
Contradiction: A man swings at a golf ball.