Anchor: a wet black dog with a red collar is in the river
Entailed: There is a canine in the water.
Contradiction: The dog is shaking his fur dry on the river bank.
Contradiction: Parking is not a consideration as these walks have ample parking spaces.  
Contradiction: Do you recall my plea for you to aid me once before?
Contradiction: A boy is playing tag with friends while in his front yard.
Contradiction: The blade had killed the man.