A light green sign on the stairs that says "STAI GUARDANO GRATIS IL PAVITMENTO"
There is a sign on some stairs.
A light green sign is the same as a sign.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(ne_nam_pavitmento(x4) & (x4 = x8) & ne_nam_il(x8) & (x4 = x7) & ne_nam_gratis(x7) & (x4 = x6) & ne_nam_guardano(x6) & (x4 = x5) & ne_nam_stai(x5) & n_stair(x2) & a_topic(x1) & on(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_say(e1) & (x2 = x3) & n_sign(x1) & a_green(s2) & Theme(s2,x1) & a_light(s1) & Theme(s1,x1))
exists p1 x1 x2 x3.((x1 = x2) & on(x2,x3) & n_stair(x3) & n_sign(x2))