A crowd of people in the street at night.
A crowd of people in the street during the day.
Night and during the day are two opposite times of day.
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 x3 x4.(n_day(x4) & n_street(x3) & a_topic(x1) & during(x1,x4) & in(x1,x3) & of(x1,x2) & n_people(x2) & n_crowd(x1))