In the presence of sunlight, NOx and volatile organic compounds react photochemically to produce ozone.
Ozone can be created when NOx and volatile organic compounds are exposed to sunlight.
In order to create ozone, NOx must be left in complete darkness.
The man was watching wrestling on tv
A person is not awake.
the girl is holding a violin
The campaign made the brand more popular worldwide.
A woman is riding a red-handled broom.
I have no idea what those afghans were intended for.