Is the fence behind a boy?
No, the fence is behind the trashcan.
    src        edge_attr  dst
0     0               on    2
1     0  to the right of    8
2     0  to the right of    1
3     1   to the left of   18
4     1  to the right of    8
..  ...              ...  ...
70   19  to the right of   18
71   19  to the right of   17
72   19   to the left of    7
73   19   to the left of    6
74   20  to the right of    9

[75 rows x 3 columns]