A man is bending down to look at something on the sidewalk.
A woman is looking into store windows along the sidewalk
A man is different than a woman.  One cannot be looking down at something on the sidewalk and into store windows simultaneously.
exists e1 p1 s1 x1 x2 x4.(n_sidewalk(x4) & Topic(e1,p1) & exists e2 x3.(at(e2,x3) & on(x3,x4) & n_thing(x3) & Actor(e2,x1) & v_look(e2)) & a_down(s1) & Manner(e1,s1) & Actor(e1,x2) & v_bend(e1) & n_man(x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(n_sidewalk(x4) & into(e1,x2) & along(x2,x4) & n_window(x2) & of(x2,x3) & n_store(x3) & Actor(e1,x1) & v_look(e1) & n_woman(x1))