A dog runs across the street in front of the car
dog running accross street
If the dog ran across the street, then the dog would be running across the street.  If the dog runs across the street in front of the car, then the dog must be running across the street.
exists e1 x1 x2 x3 x4.(n_car(x4) & n_street(x2) & in(e1,x3) & of(x3,x4) & n_front(x3) & across(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))
exists e1 x1 x2 x3.(n_street(x1) & of(x1,x3) & n_accross(x3) & Actor(e1,x1) & v_run(e1) & of(x1,x2) & n_dog(x2) & a_topic(x1))