Anchor: A surfer rides a wave in a clear blue ocean.
Entailed: surfers are in the ocean
Contradiction: the skiiers rode up the lift hill
Contradiction: People are riding over sand dunes.
Contradiction: Italy became prominent through their urban planning. 
Contradiction: The four old friends walked down the aisle of the grocery store, thinking about how much beer they had bought during their lifetime.
Contradiction: A girl is strapped into a bungie cord.