Anchor:  This contributes to the affordability of postage in the U.S.
Entailed: Postage is used in the United States.
Contradiction: The U.S. does not use postage.
Contradiction: A baby is sleep in her crib.
Contradiction: The ultimate high seems pointless to me.
Contradiction: Two men are riding bicycles together
Contradiction: A girl is standing next to a fallen tree