Several people are window shopping from the sidewalk.
An empty city block.
Empty cannot be if there are several people.
exists p1 s1 x1 x4.(n_sidewalk(x4) & exists x2 x3.((x1 = x2) & from(x2,x4) & n_shopping(x2) & of(x2,x3) & n_window(x3)) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists s1 x1 x2.(a_topic(x1) & n_block(x1) & of(x1,x2) & n_city(x2) & a_empty(s1) & Theme(s1,x1))