A crowd of people in the street at night.
People in the street.
Crowd is people.
exists x1 x2 x3 x4.(n_street(x3) & a_topic(x1) & at(x1,x4) & n_night(x4) & in(x1,x3) & of(x1,x2) & n_people(x2) & n_crowd(x1))
exists x1 x2.(n_street(x2) & a_topic(x1) & in(x1,x2) & n_people(x1))