This man dressed in white pants and blue shirt, is standing on a ledge in the snow.
A man is standing on a large field of lava.
A person cannot be standing both in the snow and by a large field of lava at the same time.
If  a man is standing on a ledge in the snow the man is not standing in a large field of lava.
The man cannot be standing on a ledge in the snow and standing on a large field of lava at the same time.