Guy on a ladder painting the building blue.
A man is painting a picture on the building.
Just because a guy is painting a building doesn't mean he is painting a picture
exists s1 x1 x2 x3 x4.(ne_nam_guy(s1) & a_topic(s1) & on(s1,x1) & n_blue(x3) & of(x3,x4) & n_building(x4) & (x1 = x3) & n_painting(x1) & of(x1,x2) & n_ladder(x2))
exists e1 x1 x2 x3.(n_building(x3) & Theme(e1,x2) & Actor(e1,x1) & v_paint(e1) & on(x2,x3) & n_picture(x2) & n_man(x1))