A shirtless man is working on a roof.
The man is working on the roof of his neighbors house.
A man working on a roof is not necessarily working on the roof of his neighbors house.
exists e1 s1 x1 x2.(on(e1,x2) & n_roof(x2) & Actor(e1,x1) & v_work(e1) & n_man(x1) & a_shirtless(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(n_house(x3) & of(x3,x4) & n_neighbor(x4) & of(x3,x2) & n_male(x2) & n_roof(x2) & n_man(x1) & on(e1,x2) & of(x2,x3) & Actor(e1,x1) & v_work(e1))