A woman admires her reflection in a display window.
Woman walks by store without peering through window
The woman would have to look in the window to see her reflection.  If she walked by without peering through the window, she would not be able to see her reflection.
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_admire(e1) & in(x2,x3) & n_window(x3) & of(x3,x4) & n_display(x4) & n_reflection(x2) & of(x2,x1) & n_female(x1) & n_woman(x1))
exists e1 x1 x2.(ne_nam_woman(x1) & -exists e2 x3.(manner(e1,e2) & through(e2,x3) & n_window(x3) & Actor(e2,x1) & v_peer(e2)) & by(e1,x2) & n_store(x2) & Actor(e1,x1) & v_walk(e1))