Anchor: A skier getting air on a ski slope.
Entailed: A skier is on a ski slope.
Contradiction: A skier is at home sleeping.
Contradiction: They are eating boxes.
Contradiction: Toxicity tests require various steps involving water. 
Contradiction: A child wearing an orange jacket is skiing down a large slope.
Contradiction: This idea supports that the postal service should charge itself the same amount for delivery as it charges competitors.