Anchor: Two dogs play catch with a ball in a field.
Entailed: Animals playing outside.
Contradiction: Cats playing with a mouse.
Contradiction: I won't do anything for the mule or the stud.
Contradiction: I saw a tan Teddy bear with a white muzzle, and brown nose.
Contradiction: A man in green is playing the drums in a garage.
Contradiction: I consider that fairly intelligent humor.