The pedestrian sign has a bolt through it on the top and bottom.
The sign is held up by some bolts.
The bolts are not necessarily what the sign is held up by, they could be attaching something else too the sign.
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 e1 s1 x1 x2.(n_sign(x1) & Actor(e1,x2) & n_bolt(x2) & a_up(s1) & Manner(e1,s1) & Theme(e1,x1) & v_hold(e1))