What is the fence made of?
The fence is made of metal.
    src        edge_attr  dst
0     0   to the left of   26
1     0   to the left of    6
2     0   to the left of    3
3     0  to the right of   16
4     0   to the left of    7
..  ...              ...  ...
68   26  to the right of    0
69   26  to the right of    3
70   26  to the right of    6
71   27  to the right of   23
72   27  to the right of   24

[73 rows x 3 columns]