Two people sunbathe beside water.
They are by a pool.
Just because people sunbathe beside water doesn't necessarily mean the people are by a pool.
exists e1 x1 x2.(beside(e1,x2) & n_water(x2) & Actor(e1,x1) & v_sunbathe(e1) & n_people(x1) & card_eq_2(x1))
exists p1 x1.(n_thing(x1) & exists x2.(by(x1,x2) & n_pool(x2)))