A skier is by himself in the woods.
A man is sleeping.
A skier is skiing in the woods not sleeping.
exists p1 x1 x2.(n_wood(x2) & n_male(x2) & in(p1,x2) & by(x1,x2) & n_skier(x1))
exists e1 x1.(Actor(e1,x1) & v_sleep(e1) & n_man(x1))