Two woman are riding on an escalator.
Woman are in a mall.
Two woman riding an escalator are not necessarily in a mall.
exists e1 x1 x2.(on(e1,x2) & n_escalator(x2) & Actor(e1,x1) & v_ride(e1) & n_woman(x1) & card_eq_2(x1))
exists p1 x1.(ne_nam_woman(x1) & exists x2.(in(x1,x2) & n_mall(x2)))