Anchor: A person on a dirt-bike motorcycle wearing multicolored protective clothing and helmet spinning out on top of a sand dune with sand spurting out in a rooster tail behind the motorcycle.
Entailed: A dirt biker shows off.
Contradiction: A man is riding a bicycle.
Contradiction: A swimmer swims a lap.
Contradiction: There is a naked person on a motorcycle.
Contradiction: Two men ride side by side in a sand dune.
Contradiction: A man drinks a glass of lemonade.