A group of people stand on the street.
people at work
People standing on the street aren't at work.
exists e1 x1 x2 x3.(n_street(x3) & on(e1,x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists x1 x2.(a_topic(x1) & at(x1,x2) & n_work(x2) & n_people(x1))