Dog with a toy in the snow.
The dog is outdoors.
If the dog is in the snow then the dog must be outdoors.
exists s1 x1 x2.(n_snow(x2) & ne_nam_dog(s1) & a_topic(s1) & with(s1,x1) & in(x1,x2) & n_toy(x1))
exists p1 x1.(n_dog(x1) & exists x2.((x1 = x2) & n_outdoors(x2)))