The city at night.
A place in the dark
A city is a place and it is dark at night.
exists x1 x2.(n_city(x1) & a_topic(x1) & at(x1,x2) & n_night(x2))
exists x1 x2.(n_dark(x2) & a_topic(x1) & in(x1,x2) & n_place(x1))