Is the fence on the right side or on the left?
The fence is on the right of the image.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of   22
2     0  to the right of   21
3     0   to the left of   13
4     0  to the right of    2
..  ...              ...  ...
71   22  to the right of   20
72   22  to the right of    5
73   22  to the right of    2
74   22  to the right of    0
75   22   to the left of   10

[76 rows x 3 columns]