A group of woman on a sidewalk.
Women are on a sidewalk
A group of woman are women.
exists x1 x2 x3.(a_topic(x1) & of(x1,x2) & on(x2,x3) & n_sidewalk(x3) & n_woman(x2) & n_group(x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_sidewalk(x2)) & n_woman(x1))