A woman is holding a boy in a swimming pool.
The woman is holding her son.
A woman holding a boy is not necessarily holding her son.
exists e1 x1 x2 x3 x4.(in(e1,x3) & n_pool(x3) & of(x3,x4) & n_swimming(x4) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_boy(x2) & n_woman(x1))
exists e1 x1 x2.(n_son(x2) & of(x2,x1) & n_female(x1) & n_woman(x1) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1))