A young woman is playing pool.
The woman is a professional pool player.
Not every woman playing pool is a professional pool player.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_pool(x2) & n_woman(x1) & a_young(s1) & Theme(s1,x1))
exists p1 x1.(n_woman(x1) & exists s1 x2 x3.((x1 = x2) & n_player(x2) & of(x2,x3) & n_pool(x3) & a_professional(s1) & Theme(s1,x2)))