Three traffic lights hang over Wilson Street.
There are no lights over Wilson Street
If there are no lights the there are no three traffic lights.
exists x1 x2 x3 x4 x5.(ne_per_street(x4) & (x4 = x5) & ne_per_wilson(x5) & a_topic(x1) & over(x1,x4) & n_hang(x1) & of(x1,x3) & n_light(x3) & of(x1,x2) & n_traffic(x2) & card_eq_3(x1))
exists p1 x1 x3 x4.(ne_per_street(x3) & (x3 = x4) & ne_per_wilson(x4) & -exists x2.((x1 = x2) & over(x2,x3) & n_light(x2)))