On which side of the image is the fence?
The fence is on the left of the image.
     src        edge_attr  dst
0      0               on    8
1      1   to the left of   19
2      1  to the right of   15
3      1  to the right of    4
4      1   to the left of    2
..   ...              ...  ...
106   30   to the left of   12
107   30  to the right of   15
108   31  to the right of   14
109   31   to the left of   23
110   31  to the right of   15

[111 rows x 3 columns]