A dog walks across the snow.
a dog is lot
The dog may be not be lot (sic) as it walks across the snow. The dog may know its destination.
exists e1 x1 x2.(n_snow(x2) & across(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_lot(x2)) & n_dog(x1))