A woman holds small boy on a couch.
A child is sitting on a woman.
A small boy can be a child, and to hold the child, he can be sitting on the woman's lap.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_couch(x3) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_boy(x2) & a_small(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 x1 x2.(on(e1,x2) & n_woman(x2) & Actor(e1,x1) & v_sit(e1) & n_child(x1))