A man smiles while he washes windows.
A man is up high on a skyscraper.
Not all windows are on a skyscraper.
exists e1 p1 x1.(exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_wash(e2) & n_window(x2)) & n_male(x1) & while(e1,p1) & Actor(e1,x1) & v_smile(e1) & n_man(x1))
exists s1 x1 x2.(on(s1,x2) & n_skyscraper(x2) & r_up(s1) & Theme(s1,x1) & a_high(s1) & n_man(x1))