Anchor: A professional dirt biker doing stunts while being videotaped
Entailed: The dirt biker, who is a professional, is being videotaped doing stunts.
Contradiction: The professional dirt biker is being filmed sitting next to his bike.
Contradiction: Two girls and two boys are playing a board game.
Contradiction: The mileage varies depending on whether it's tuned up or not.
Contradiction: There is nothing of value left there.
Contradiction: A slide is happening.