On which side is the fence, the left or the right?
The fence is on the left of the image.
    src        edge_attr  dst
0     0  to the right of   18
1     0  to the right of    4
2     0  to the right of   14
3     0  to the right of   10
4     2  to the right of   18
..  ...              ...  ...
69   18  to the right of   12
70   18  to the right of    5
71   18  to the right of   11
72   18   to the left of    9
73   18               on    0

[74 rows x 3 columns]