A crowd of people stand talking in a business district.
A crowd of people talking as they wait for a concert in a business district
A crowd of people in a business district does not necessarily imply that they are waiting for a concert.
exists e1 p1 x1 x2.(exists e2 x3 x4.(in(e2,x3) & n_district(x3) & of(x3,x4) & n_business(x4) & Actor(e2,x1) & v_talk(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_crowd(x1))
exists e1 e2 x1 x2 x3 x4 x5 x6.(for(e2,x4) & in(x4,x5) & n_district(x5) & of(x5,x6) & n_business(x6) & n_concert(x4) & Actor(e2,x1) & v_wait(e2) & of(x1,x2) & as(e1,x1) & n_thing(x1) & Actor(e1,x3) & v_talk(e1) & (x2 = x3) & n_people(x2) & n_crowd(x1))