The back side of a woman standing on a city sidewalk.
There's a woman staring at a large building, but we can only see her back.
Only being able to see a woman's back does not mean that she is staring at a large building.
exists e1 s1 x1 x2 x3 x4 x5.(n_side(x1) & a_back(s1) & Theme(s1,x1) & a_topic(x1) & of(x1,x2) & on(e1,x4) & n_sidewalk(x4) & of(x4,x5) & n_city(x5) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_woman(x2))
exists e1 p1 p2 s1 x1 x2 x6.(n_back(x6) & of(x6,x2) & n_female(x2) & n_person(x2) & a_only(s1) & Manner(e1,s1) & exists e3.(Theme(e3,x6) & Actor(e3,x2) & v_see(e3)) & Topic(e1,p2) & Actor(e1,x2) & v_can(e1) & exists e2 s2 x3 x4 x5.((x1 = x3) & at(e2,x5) & n_building(x5) & a_large(s2) & Theme(s2,x5) & Actor(e2,x4) & v_stare(e2) & (x3 = x4) & n_woman(x3)))