Anchor: A man on a surfboard navigates waves in the ocean.
Entailed: The man on the surfboard is in the ocean.
Contradiction: The man is with his dog at the game.
Contradiction: I unicycle on a tightwire.
Contradiction: The judge tried to avoid anything that would cause a mistrial.  
Contradiction: There is no temple near the palace.
Contradiction: The traveled towards the higher trails.