A brown and black dog is rubbing his face in the grass.
The dog is a pit bull
Not every brown and black dog is a pit bull.
exists e1 s1 s2 x1 x2 x3.(n_grass(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_rub(e1) & n_face(x2) & of(x2,x1) & n_male(x1) & n_dog(x1) & a_black(s2) & Theme(s2,x1) & a_brown(s1) & Theme(s1,x1))
exists p1 x1.(n_dog(x1) & exists x2 x3.((x1 = x2) & n_bull(x2) & of(x2,x3) & n_pit(x3)))