Several people in front of stores.
they are no people in front of the stores.
No people is different than several people.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & of(x2,x3) & n_store(x3) & n_front(x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists p1 x1 x2.(n_store(x2) & in(p1,x1) & of(x1,x2) & n_front(x1) & -exists x3.((x1 = x3) & n_people(x3)) & n_thing(x1))