Is there a fence or a bird in this photo?
Yes, there is a bird.
    src        edge_attr  dst
0     0   to the left of   20
1     1   to the left of    7
2     1  to the right of    5
3     1   to the left of   22
4     1   to the left of   14
..  ...              ...  ...
74   23   to the left of   22
75   23  to the right of    1
76   24   to the left of   23
77   24   to the left of    1
78   24   to the left of    3

[79 rows x 3 columns]