Anchor: Surfer surfs ahead of a crashing wave
Entailed: People are in the water.
Contradiction: A man swims laps in a pool.
Contradiction: They are not the one responsible for making laws.
Contradiction: I told her that stealing is bad whether you're black or white.
Contradiction: The woman is wearing pajamas.
Contradiction: Zero net investment is when gross investment is only enough to replace depreciated capital.