Anchor: A person surfing a big wave.
Entailed: A surfer is riding a wave.
Contradiction: A surfer is in his boat.
Contradiction: The man is swimming in lava.
Contradiction: He has started an ad campaign.
Contradiction: One boy in a green shirt rides a horse hitched to a cart carrying two boys in green along a road.
Contradiction: I can imagine specially the kids that were buying them