An old woman entertains a small child by placing things on her head.
The woman is not placing things on her head.
both placing things and not placing things are different scenarios.
exists e2 e1 s1 s2 x1 x2 x3 x4.(by(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_place(e2) & on(x3,x4) & n_head(x4) & of(x4,x1) & n_female(x1) & n_thing(x3) & Theme(e1,x2) & Actor(e1,x1) & v_entertain(e1) & n_child(x2) & a_small(s2) & Theme(s2,x2) & n_woman(x1) & a_old(s1) & Theme(s1,x1))
exists x1 x3.(n_head(x3) & of(x3,x1) & n_female(x1) & n_woman(x1) & -exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_place(e1) & on(x2,x3) & n_thing(x2)))