Are there any trains or windows?
Yes, there are windows.
     src        edge_attr  dst
0      1  to the right of   22
1      1   to the left of   21
2      2  to the right of   22
3      4  to the right of   40
4      6   to the left of   17
..   ...              ...  ...
181   39  to the right of   22
182   39   to the left of   33
183   40  to the right of   41
184   40   to the left of    4
185   41   to the left of   40

[186 rows x 3 columns]