What is the fence made of?
The fence is made of metal.
     src        edge_attr  dst
0      0   to the left of   21
1      0  to the right of   12
2      0   to the left of   28
3      0   to the left of   22
4      0   to the left of    3
..   ...              ...  ...
153   41   to the left of   18
154   41   to the left of   37
155   41  to the right of   24
156   42  to the right of   27
157   42  to the right of   33

[158 rows x 3 columns]