Two young boys and a baby sitting on a swing.
The baby is pushing the kids on the swing.
The baby cannot be sitting on a swing and pushing it at the same time
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 e1 x1 x2 x3.(n_swing(x3) & n_kid(x2) & n_baby(x1) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_push(e1))