What is the sign on?
The sign is on the pole.
   src        edge_attr  dst
0    0   to the left of    6
1    3  to the right of    5
2    5   to the left of    9
3    5   to the left of    3
4    5               on    2
5    6  to the right of    0
6    7   to the left of   10
7    9               in   10
8    9  to the right of    5
9   10  to the right of    7