What is in front of the wall?
The bathtub is in front of the wall.
    src        edge_attr  dst
0     0      in front of    1
1     0               in   15
2     0      in front of    4
3     0   to the left of    6
4     0   to the left of   13
..  ...              ...  ...
87   19   to the left of   17
88   20  to the right of   16
89   20  to the right of   18
90   20  to the right of    0
91   20               in   15

[92 rows x 3 columns]