What is on the pole?
The sign is on the pole.
    src        edge_attr  dst
0     0   to the left of    3
1     1   to the left of    3
2     1  to the right of    2
3     2   to the left of    1
4     2   to the left of    9
5     2   to the left of    6
6     3  to the right of    6
7     3  to the right of    9
8     3  to the right of    7
9     3  to the right of    5
10    3  to the right of    1
11    3  to the right of    0
12    5   to the left of    3
13    6  to the right of    2
14    6   to the left of    3
15    7               on    6
16    7   to the left of    3
17    9  to the right of    2
18    9  to the right of   11
19    9  to the right of   12
20    9   to the left of    3
21   11   to the left of    9
22   12   to the left of    9