a little girl pushes a little boy on the swing.
The girl pushes the boy.
Little girl is a girl and little boy is a boy.
exists e1 s1 s2 x1 x2 x3.(n_swing(x3) & Theme(e1,x2) & Actor(e1,x1) & v_push(e1) & on(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_boy(x2) & n_girl(x1) & Theme(e1,x2) & Actor(e1,x1) & v_push(e1))