A priest rubs a cross on a man's forehead.
two men are skydiving
Men rubbing cross cannot be skydiving at same time.
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_rub(e1) & on(x2,x4) & n_forehead(x4) & of(x4,x3) & n_man(x3) & n_cross(x2) & n_priest(x1))
exists e1 x1.(Actor(e1,x1) & v_skydive(e1) & n_man(x1) & card_eq_2(x1))