Which side of the image is the fence on?
The fence is on the right of the image.
    src        edge_attr  dst
0     0               on    8
1     0   to the left of    6
2     2               on    1
3     2               by    6
4     3   to the left of    6
5     4   to the left of    6
6     5  to the right of    8
7     6  to the right of    8
8     6  to the right of    7
9     6  to the right of    0
10    6  to the right of    3
11    6  to the right of    4
12    7   to the left of    6
13    8   to the left of    5
14    8   to the left of    6