A person walking in the snow with a forest of trees in the background.
A person is outside.
Someone walking in the snow with trees in the background must be walking outside.
exists x1 x2 x3 x4 x5 x6.(n_background(x6) & n_snow(x3) & a_topic(x1) & in(x1,x3) & with(x3,x4) & of(x4,x5) & in(x5,x6) & n_tree(x5) & n_forest(x4) & Time(x1,x2) & n_walking(x2) & n_person(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_person(x1))