A naked woman steps into the water.
A man and woman steps into the water
One naked woman is not the same as a woman with a man.
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 x1 x2 x3 x4.(n_water(x4) & a_topic(x1) & into(x1,x4) & n_step(x1) & of(x1,x3) & n_woman(x3) & of(x1,x2) & n_man(x2))