A policeman stops on a street with a search dog.
police are looking for bad guys
It may be a regular check and not looking for bad guys
exists e1 x1 x2 x3 x4.(with(e1,x3) & n_dog(x3) & of(x3,x4) & n_search(x4) & on(e1,x2) & n_street(x2) & Actor(e1,x1) & v_stop(e1) & n_policeman(x1))
exists e1 s1 x1 x2.(for(e1,x2) & n_guy(x2) & a_bad(s1) & Theme(s1,x2) & Actor(e1,x1) & v_look(e1) & n_police(x1))