Which place is it?
It is a hotel room.
    src        edge_attr  dst
0     0   to the left of    5
1     0   to the left of   16
2     0   to the left of   15
3     0   to the left of   17
4     0   to the left of    6
..  ...              ...  ...
91   21  to the right of    0
92   21  to the right of    7
93   21  to the right of   19
94   22  to the right of    0
95   22  to the right of   13

[96 rows x 3 columns]