Two laborers are working on a roof with a bright blue sky in the background.
Two workers work to repair a chimney on the roof.
Not all laborers working on a roof will be working on a chimney.
exists e1 s1 s2 x1 x2 x3 x4.(n_background(x4) & on(e1,x2) & with(x2,x3) & in(x3,x4) & n_sky(x3) & a_blue(s2) & Theme(s2,x3) & a_bright(s1) & Theme(s1,x3) & n_roof(x2) & Actor(e1,x1) & v_work(e1) & n_laborer(x1) & card_eq_2(x1))
exists e1 p1 x1 x2 x4.(n_roof(x4) & Topic(e1,p1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_repair(e2) & on(x3,x4) & n_chimney(x3)) & Actor(e1,x2) & v_work(e1) & n_worker(x2) & card_eq_2(x2) & n_worker(x1) & card_eq_2(x1))