Anchor: Three young men play hockey on green astroturf.
Entailed: Three hockey players stand together.
Contradiction: A wild hockey stick chasing a hockey player.
Contradiction: These random CWC inspections are completely legal and constitutional. 
Contradiction: We've been skiing there, but I would like to go camping there.
Contradiction: This woman is swimming in a pool.
Contradiction: A security officer makes sure to smile.