Black dog stands in river.
dogs looks for stick
stands doesn't imply  looks for
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_river(x3) & n_stand(x1) & of(x1,x2) & n_dog(x2) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2.(for(e1,x2) & n_stick(x2) & Actor(e1,x1) & v_look(e1) & n_dog(x1))