A person out in the snow.
The person is outside.
If an individual is in the snow, it's clear that individual is outside.
exists x1 x2 x3.(n_snow(x3) & a_topic(x1) & in(x2,x3) & out(x1,x2) & n_thing(x2) & n_person(x1))
exists s1 x1.(n_person(x1) & Theme(s1,x1) & a_outside(s1))