On which side of the image is the fence?
The fence is on the right of the image.
     src        edge_attr  dst
0      0  to the right of    4
1      0   to the left of    8
2      0  to the right of    5
3      0  to the right of    2
4      0  to the right of   11
..   ...              ...  ...
112   15   to the left of    8
113   15   to the left of   12
114   15   to the left of    2
115   15  to the right of    4
116   15   to the left of    1

[117 rows x 3 columns]