Here are a bunch of people at a sidewalk sale.
There are people at a sale.
"People at a sidewalk sale" is just more description given to the statement of "people at a sale."
exists s1 x1 x2 x3 x4.(Theme(s1,x1) & a_here(s1) & at(x1,x3) & n_sale(x3) & of(x3,x4) & n_sidewalk(x4) & of(x1,x2) & n_people(x2) & n_bunch(x1))
exists p1 x1 x2 x3.((x1 = x2) & at(x2,x3) & n_sale(x3) & n_people(x2))