Two men work on a metal roof in the sunlight, one man is wearing a white shirt and the other man is wearing a black shirt and holding a drill.
The men are working on the computer.
If someone is working on a metal roof then they are not working on the computer.
exists e3 e4 e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_sunlight(x4) & Theme(e4,x9) & Actor(e4,x1) & v_hold(e4) & n_drill(x9) & -(x1 = x8) & n_man(x8) & n_man(x1) & n_man(x1) & Theme(e3,x7) & Actor(e3,x5) & v_wear(e3) & n_shirt(x7) & a_black(s2) & Theme(s2,x7) & -(x5 = x1) & n_man(x5) & n_man(x5) & Theme(e2,x6) & Actor(e2,x5) & v_wear(e2) & n_shirt(x6) & a_white(s1) & Theme(s1,x6) & card_eq_1(x5) & in(e1,x4) & on(e1,x2) & n_roof(x2) & of(x2,x3) & n_metal(x3) & Actor(e1,x1) & v_work(e1) & card_eq_2(x1))
exists e1 x1 x2.(n_computer(x2) & n_man(x1) & on(e1,x2) & Actor(e1,x1) & v_work(e1))