A woman is walking down the sidewalk.
woman on side walk
Walking down the side walk is the same as being on the side walk.
exists e1 s1 x1 x2.(n_sidewalk(x2) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_woman(x1))
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & n_walk(x2) & of(x2,x3) & n_side(x3) & n_woman(x1))