On which side is the fence?
The fence is on the left of the image.
     src        edge_attr  dst
0      0   to the left of   12
1      0   to the left of   13
2      1  to the right of   22
3      1  to the right of   21
4      1  to the right of   24
..   ...              ...  ...
100   27   to the left of   25
101   28  to the right of   14
102   28  to the right of   11
103   28           behind   13
104   28  to the right of   16

[105 rows x 3 columns]