Three men are working on a roof.
Three men are outdoors.
Working on a roof is something that is done outdoors.
exists e1 x1 x2.(on(e1,x2) & n_roof(x2) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_3(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_outdoors(x2)) & n_man(x1) & card_eq_3(x1))