A skier skis by a sign out in the mountains.
A man drinks milk.
A man does not ski as he drinks.
exists x1 x2 x3 x4 x5.(n_mountain(x5) & a_topic(x1) & in(x4,x5) & out(x1,x4) & n_thing(x4) & by(x1,x3) & n_sign(x3) & n_ski(x1) & of(x1,x2) & n_skier(x2))
exists x1 x2 x3.(a_topic(x1) & n_milk(x1) & of(x1,x3) & n_drink(x3) & of(x1,x2) & n_man(x2))