What is the gate made of?
The gate is made of metal.
    src        edge_attr  dst
0     0           beside   21
1     0   to the left of   21
2     0  to the right of    8
3     0   to the left of    5
4     0  to the right of   16
..  ...              ...  ...
79   21           behind   19
80   21   on the side of    7
81   23  to the right of    8
82   23             near    7
83   23   to the left of    5

[84 rows x 3 columns]