Do you see a door or a train in the scene?
Yes, there are doors.
    src        edge_attr  dst
0     0   to the left of    2
1     0  to the right of   12
2     0  to the right of   15
3     0  to the right of   14
4     0  to the right of    8
..  ...              ...  ...
60   15   to the left of    2
61   15  to the right of    3
62   15   to the left of    0
63   16   to the left of    5
64   16   to the left of    1

[65 rows x 3 columns]