Four men do repair work on a roof.
Four men having lunch on a roof.
Repair work is not having lunch.
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 x3 x4.(a_topic(x1) & on(e1,x4) & n_roof(x4) & Theme(e1,x3) & Actor(e1,x2) & v_have(e1) & n_lunch(x3) & (x1 = x2) & n_man(x1) & card_eq_4(x1))