A group of people in a street marketplace.
There are people at a flea market.
This may not be a flea market.
exists x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & in(x2,x3) & n_marketplace(x3) & of(x3,x4) & n_street(x4) & n_people(x2) & n_group(x1))
exists p1 x1 x2 x3.(at(p1,x2) & n_market(x2) & of(x2,x3) & n_flea(x3) & exists x4.((x1 = x4) & n_people(x4)))