What's the fence made of?
The fence is made of metal.
     src        edge_attr  dst
0      0               of   26
1      0   to the left of   15
2      0   to the left of    5
3      0  to the right of   23
4      0   to the left of   19
..   ...              ...  ...
173   26   to the left of   21
174   26   to the left of   19
175   26   to the left of   12
176   26   to the left of   15
177   26   to the left of   13

[178 rows x 3 columns]