A little girl is pushing a little boy who is sitting on a swing.
Children are playing on the swings
Little girl and little boy together are known as children.
exists e1 e2 s1 s2 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_push(e2) & on(e1,x4) & n_swing(x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_boy(x2) & a_little(s2) & Theme(s2,x2) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_swing(x2) & on(e1,x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))