What is on the fence?
The wire is on the fence.
    src        edge_attr  dst
0     0  to the right of    9
1     0  to the right of   14
2     0  to the right of   15
3     0   to the left of   10
4     0  to the right of   12
..  ...              ...  ...
62   16   to the left of   10
63   17   to the left of   10
64   18   to the left of    0
65   18  to the right of   12
66   18  to the right of    9

[67 rows x 3 columns]