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    2
1     1   to the left of    7
2     2   to the left of    6
3     2   to the left of    4
4     2   to the left of    0
5     2   to the left of    3
6     3  to the right of    2
7     4  to the right of    2
8     6  to the right of    2
9     6               on    3
10    7  to the right of    1