Anchor: A parasurfer is airborne over the water.
Entailed: Someone is parsurfing.
Contradiction: A man is driving a boat with his feet.
Contradiction: No poor people live in West Virginia. 
Contradiction: A black dog is coming out of the water
Contradiction: A man is biycling toward a big building.
Contradiction: Their ability to use the sling is said to have brought them onto the world stage and left a mark in the pages of history.