Is the metal chain around the pipe?
Yes, the chain is around the pipe.
    src        edge_attr  dst
0     0  to the right of    9
1     0  to the right of   11
2     0  to the right of   22
3     0  to the right of   14
4     0   to the left of    5
..  ...              ...  ...
80   22   to the left of    3
81   22  to the right of   10
82   22  to the right of   11
83   22  to the right of   12
84   22   to the left of    1

[85 rows x 3 columns]