A man hugs a smiling girl.
The man is the girl's grandfather.
We have no idea if the man is the girls grandfather or someone else.
exists e1 e2 x1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_hug(e2) & n_girl(x2) & Actor(e1,x2) & v_smile(e1) & n_man(x1))
exists p1 x1 x2 x3.(n_grandfather(x3) & of(x3,x2) & n_girl(x2) & n_man(x1) & (x1 = x3))