What is the fence made of?
The fence is made of metal.
    src        edge_attr  dst
0     0   to the left of   14
1     0   to the left of    6
2     0   to the left of    1
3     0   to the left of    9
4     0   to the left of    8
..  ...              ...  ...
92   27           beside   28
93   27           behind   20
94   27           behind   23
95   28  to the right of   24
96   28  to the right of   21

[97 rows x 3 columns]