A woman in sunglasses and a scarf walk down the sidewalk.
The woman is walking.
in a both sentence sunglass and woman is different
exists s1 x1 x2 x3 x4 x5.(n_sidewalk(x5) & a_topic(s1) & subset_of(x3,s1) & down(x3,x5) & n_walk(x3) & of(x3,x4) & n_scarf(x4) & subset_of(x1,s1) & in(x1,x2) & n_sunglass(x2) & n_woman(x1))
exists e1 x1.(n_woman(x1) & Actor(e1,x1) & v_walk(e1))