Anchor: A snowboarder is taking a jump on their board with a mountainous background and blue sky.
Entailed: A snowboarder is jumping.
Contradiction: A snowboarder is taking a break on a bench.
Contradiction: There are none. 
Contradiction: In the hours that ensued, Dave's plans evolved a lot.
Contradiction: Shaking his head vigorously, Inglethorp said that it was a lie.
Contradiction: A person is indoors.