Anchor: In the presence of sunlight, NOx and volatile organic compounds react photochemically to produce ozone.
Entailed: Ozone can be created when NOx and volatile organic compounds are exposed to sunlight.
Contradiction: In order to create ozone, NOx must be left in complete darkness.
Contradiction: The man is naked.
Contradiction: I've enjoyed our conversation.
Contradiction: I don't live in Garland, there aren't any schools there.
Contradiction: They have been friends for five years.