Two young boys and a baby sitting on a swing.
The children are not going to fall.
It's not sure that children playing on a swing are not going to fall.
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & on(e1,x4) & n_swing(x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_baby(x2) & subset_of(x1,s1) & n_boy(x1) & a_young(s2) & Theme(s2,x1) & card_eq_2(x1))
exists x1.(n_child(x1) & -exists e1 p1.(Topic(e1,p1) & Actor(e1,x1) & v_go(e1) & exists e2.(Actor(e2,x1) & v_fall(e2))))