A dog in the snow
A dog is in the snow
"A dog is in the snow" is a rephrasing of "A dog in the snow".
exists x1 x2.(n_snow(x2) & a_topic(x1) & in(x1,x2) & n_dog(x1))
exists p1 x1 x2.(n_snow(x2) & in(x1,x2) & n_dog(x1))