Where is the drain?
The drain is on the floor.
    src        edge_attr  dst
0     0  to the right of    9
1     0  to the right of   12
2     0  to the right of    6
3     0  to the right of   15
4     0  to the right of    5
..  ...              ...  ...
71   16  to the right of    7
72   16  to the right of    2
73   16  to the right of    3
74   16  to the right of   12
75   16  to the right of    9

[76 rows x 3 columns]