A couple waiting at a crosswalk in a brightly lit city.
The couple are in the dark.
The city cannot be brightly lit if it is dark.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x3) & in(x3,x4) & n_city(x4) & a_lit(s1) & Theme(s1,x4) & r_brightly(x4) & n_crosswalk(x3) & Actor(e1,x2) & v_wait(e1) & (x1 = x2) & n_couple(x1))
exists p1 x1 x2.(n_dark(x2) & n_couple(x1) & in(x1,x2))