A black dog is in action on a grassy area.
an all white dog plays on a very sandy beach
The black dog is on a grassy area but the white dog is on a very sandy beach
exists p1 s1 x1.(exists s2 x2 x3.(in(x1,x2) & on(x2,x3) & n_area(x3) & a_grassy(s2) & Theme(s2,x3) & n_action(x2)) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2.(on(e1,x2) & n_beach(x2) & a_sandy(s2) & Theme(s2,x2) & r_very(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & a_white(s1) & Theme(s1,x1))