Four men do repair work on a roof.
Four women repair a roof.
Men are not women.
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & on(x2,x4) & n_roof(x4) & n_work(x2) & of(x2,x3) & n_repair(x3) & n_man(x1) & card_eq_4(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_repair(e1) & n_roof(x2) & n_woman(x1) & card_eq_4(x1))