A young boy is diving into a swimming pool.
The boy is strong
Not all boys are strong.
exists e1 s1 x1 x2 x3.(into(e1,x2) & n_pool(x2) & of(x2,x3) & n_swimming(x3) & Actor(e1,x1) & v_dive(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists s1 x1.(n_boy(x1) & Theme(s1,x1) & a_strong(s1))