Anchor: Mallard duck swimming out in the water.
Entailed: The duck is outside in the water.
Contradiction: The duck is in the playpen.
Contradiction: I asked immediately when John Cavendish had been first suspected.
Contradiction: Automated techniques should depend on risks, benefits and cost effectiveness. 
Contradiction: A man is not cleaning his yard
Contradiction: A man is singing with instruments in the background.