Anchor: A man is riding a bucking horse trying to hold on and not get thrown off.
Entailed: A man riding a rowdy horse.
Contradiction: A man riding a unicorn.
Contradiction: The teddy bear is giving me dirty looks.
Contradiction: The person carries his bike up the incline.
Contradiction: The boy swims in the lake.
Contradiction: Jeanette Winterson wrote Gut Symmetries