Which place is it?
It is a train station.
     src        edge_attr  dst
0      2   to the left of   27
1      3   to the left of    8
2      3   to the left of    5
3      3   to the left of   14
4      3   to the left of   31
..   ...              ...  ...
305   41   to the left of   12
306   41   to the left of    4
307   41   to the left of   34
308   41   to the left of   13
309   41  to the right of    3

[310 rows x 3 columns]