Is there any door?
Yes, there is a door.
    src        edge_attr  dst
0     0   to the left of   20
1     0   to the left of    2
2     1           behind   13
3     2  to the right of    0
4     2   to the left of   11
..  ...              ...  ...
67   20  to the right of    0
68   20   to the left of   14
69   20  to the right of   18
70   20   to the left of    2
71   20   to the left of   17

[72 rows x 3 columns]