Someone in a 3ft swimming pool.
A person is in a shallow pool.
A person is someone.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_pool(x2) & of(x2,x3) & n_swimming(x3) & a_3ft(s1) & Theme(s1,x2) & n_person(x1))
exists p1 x1.(exists s1 x2.(in(x1,x2) & n_pool(x2) & a_shallow(s1) & Theme(s1,x2)) & n_person(x1))