People are running on a street in the cold.
Nobody is running
When nobody is running , people cannot be running.
exists e1 x1 x2 x3.(n_cold(x3) & in(e1,x3) & on(e1,x2) & n_street(x2) & Actor(e1,x1) & v_run(e1) & n_people(x1))
-exists e1 x1.(Actor(e1,x1) & v_run(e1) & n_person(x1))