What is the fence in front of?
The fence is in front of the plants.
    src        edge_attr  dst
0     0  to the right of    8
1     0   to the left of    4
2     0  to the right of   17
3     1   to the left of   16
4     1  to the right of   13
..  ...              ...  ...
62   19   to the left of   16
63   19  to the right of   17
64   20  to the right of   17
65   20  to the right of   13
66   20  to the right of    6

[67 rows x 3 columns]