The pedestrian sign has a bolt through it on the top and bottom.
The sign is on a tall metal pole
Signs can be on a variety of materials, we cannot assume that the sign is on a tall metal pole.
exists e1 s1 x1 x2 x3 x4 x5.(n_bottom(x5) & n_top(x4) & subset_of(x5,x3) & subset_of(x4,x3) & n_thing(x1) & n_sign(x1) & a_pedestrian(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & on(x2,x3) & through(x2,x1) & n_bolt(x2))
exists p1 x1.(n_sign(x1) & exists s1 x2 x3.(on(x1,x2) & n_pole(x2) & of(x2,x3) & n_metal(x3) & a_tall(s1) & Theme(s1,x2)))