Anchor: A snowboarder is going down a snowy hill next to a staircase behind a building.
Entailed: a snowboarder goes downhill near a building
Contradiction: a snowboarder sleeps next to some buildings
Contradiction: The bikers are riding their bikes on the beach.
Contradiction: Enforced racial preference is not moral . 
Contradiction: The sight of them cheered Tommy up.
Contradiction: A girl is making a blanket