A black dog sits in sand.
A dog sits in the sand.
The black dog is a dog, and it is sitting in the sand.
exists e1 s1 x1 x2.(in(e1,x2) & n_sand(x2) & Actor(e1,x1) & v_sit(e1) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_sand(x2) & in(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_dog(x1))