Person on swing
the person swing on the road
Swings are not on the road.
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_swing(x2) & n_person(x1))
exists x1 x2 x3.(n_road(x3) & n_person(x1) & a_topic(x1) & on(x1,x3) & Time(x1,x2) & n_swing(x2))