Anchor: Eight go kart racers speed around the curves at fast paced speeds as they all race of the same goal of finishing first on their mind as the compete in a race.
Entailed: There are eight racers
Contradiction: There are no racers
Contradiction: He spends three hours doing that with them on Saturdays.
Contradiction: a person wearing a helmet rides a bike
Contradiction: They couldn't have gotten out small computers at all, they were all too big.
Contradiction: A band playing some songs.