A black dog frolics in the snow.
Dog digging a hole
A black dog is a very specific statement compared to dog which is very vague.
exists s1 x1 x2 x3.(n_snow(x3) & a_topic(x1) & in(x1,x3) & n_frolic(x1) & of(x1,x2) & n_dog(x2) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2.(ne_nam_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_dig(e1) & n_hole(x2))