Anchor: a single man wear a black mask with several people in the background
Entailed: A man in a black mask.
Contradiction: A boat tied to a dock.
Contradiction: A cowboy is sitting calmly on top of the bull.
Contradiction: It might be worth thinking about if there was a an infinite supply of infinitely strong material.  
Contradiction: The child is under his bed.
Contradiction: man on steps