Men and women walking down the sidewalk.
A group of people are inside a mall.
One group is outside on a sidewalk, and one group is inside a mall.
exists e1 s1 x1 x2 x3 x4.(n_sidewalk(x4) & a_topic(s1) & subset_of(x2,s1) & down(e1,x4) & Actor(e1,x3) & v_walk(e1) & (x2 = x3) & n_woman(x2) & subset_of(x1,s1) & n_man(x1))
exists p1 x1 x2.(exists x3.(inside(x1,x3) & n_mall(x3)) & of(x1,x2) & n_people(x2) & n_group(x1))