A naked woman steps into the water.
A naked woman steps in to the swimming pool
Swimming pools are normally filled with water.  So stepping into water is a prerequisite for stepping into a swimming pool.
exists s1 x1 x2 x3.(n_water(x3) & a_topic(x1) & into(x1,x3) & n_step(x1) & of(x1,x2) & n_woman(x2) & a_naked(s1) & Theme(s1,x1))
exists s1 x1 x2 x3 x4 x5.(n_pool(x4) & of(x4,x5) & n_swimming(x5) & a_topic(x1) & to(x3,x4) & in(x1,x3) & n_thing(x3) & n_step(x1) & of(x1,x2) & n_woman(x2) & a_naked(s1) & Theme(s1,x1))