Are there any fences in the photo?
No, there are no fences.
    src        edge_attr  dst
0     0  to the right of   19
1     0   to the left of   18
2     0   to the left of   21
3     0  to the right of    2
4     0   to the left of    1
..  ...              ...  ...
73   20   to the left of   19
74   21  to the right of   18
75   21  to the right of    0
76   21  to the right of    5
77   21  to the right of    1

[78 rows x 3 columns]