People sit on a bench by the pool.
People are near water.
Not all pools have water in them.
exists e1 x1 x2 x3.(n_pool(x3) & by(e1,x3) & on(e1,x2) & n_bench(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1))
exists p1 x1.(exists s1 x2.((x1 = x2) & n_water(x2) & a_near(s1) & Theme(s1,x2)) & n_people(x1))