Anchor: A rodeo rider gets tossed up into the air by a black bull as fellow cowboys look on.
Entailed: A bull attacked a rider.
Contradiction: Rodeo clowns do barrel rolls
Contradiction: A rodeo rider is petting his bull.
Contradiction: a rodeo rider is eating
Contradiction: The rider was sleeping on the floor.
Contradiction: A rodeo rider throws a bull in the air.