Which place is it?
It is a yard.
    src        edge_attr  dst
0     1   to the left of   21
1     1  to the right of   23
2     1  to the right of   22
3     1   to the left of    7
4     1   to the left of   10
..  ...              ...  ...
78   22   to the left of   17
79   23   to the left of   18
80   23   to the left of   17
81   23   to the left of    7
82   23   to the left of    1

[83 rows x 3 columns]