Anchor: A horse bucks its rider in an arena as onlookers watch from bleachers.
Entailed: A horse bucks it's rider.
Contradiction: A horse is nibbling on a carrot in his barn.
Contradiction: The thoughts on his mind were plain to see.
Contradiction: The boys are alive
Contradiction: There was no honor system for the exam, they just made us take them in 3 hours.
Contradiction: Dogs are running.