What animals is the fence behind of?
The fence is behind the birds.
    src        edge_attr  dst
0     0               on   14
1     0   to the left of    2
2     0   to the left of    1
3     0   to the left of   19
4     1  to the right of    0
..  ...              ...  ...
83   21  to the right of   17
84   21  to the right of   16
85   22  to the right of    4
86   22   to the left of   19
87   22   to the left of    8

[88 rows x 3 columns]