A girl is playing on a swing.
A girl is laying down in her class.
The girl cannot be laying down and on a swing at the same time.
exists e1 x1 x2.(on(e1,x2) & n_swing(x2) & Actor(e1,x1) & v_play(e1) & n_girl(x1))
exists e1 s1 x1 x2.(in(e1,x2) & n_class(x2) & of(x2,x1) & n_female(x1) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_lay(e1) & n_girl(x1))