One person is wearing a green shirt while sleeping on the sidewalk while another person wearing black pants is sleeping on the stairs .
It is impossible that a person with a green shirt is sleeping right next to a person with black pants .
It is impossible that a person with a green shirt is sleeping right next to a person with black pants .
There is a very good chance that a person with a green shirt is sleeping right next to a person with black pants .
A person with a green shirt is sleeping right next to a person with black pants .