Two kids standing on a circular swing.
Two kids on a slide.
You don't stand on a slide, nor is a slide a swing
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_swing(x3) & a_circular(s1) & Theme(s1,x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_kid(x1) & card_eq_2(x1))
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_slide(x2) & n_kid(x1) & card_eq_2(x1))