A dog above snow.
The ground is covered in snow
A dog above snow is covered in snow.
exists x1 x2.(a_topic(x1) & above(x1,x2) & n_snow(x2) & n_dog(x1))
exists e1 x1 x2.(n_ground(x1) & in(e1,x2) & n_snow(x2) & Theme(e1,x1) & v_cover(e1))