A city street is illuminated by lamps at night.
A city street is dim with no working streetlamps
the city street cannot be illuminated if there is no working street lamps.
exists e1 x1 x2 x3 x4.(at(e1,x4) & n_night(x4) & Actor(e1,x3) & n_lamp(x3) & Theme(e1,x1) & v_illuminate(e1) & n_street(x1) & of(x1,x2) & n_city(x2))
exists p1 x1 x2.(exists x3.(-exists e1 x4.((x1 = x3) & with(x3,x4) & n_streetlamp(x4) & Actor(e1,x4) & v_work(e1)) & n_dim(x3)) & n_street(x1) & of(x1,x2) & n_city(x2))