What is on the window?
The curtain is on the window.
    src        edge_attr  dst
0     1  to the right of    6
1     2   to the left of   21
2     3   to the left of    5
3     3  to the right of   16
4     3   to the left of    6
..  ...              ...  ...
83   22   to the left of    4
84   22   to the left of    8
85   22   to the left of    6
86   22  to the right of   16
87   22               on   19

[88 rows x 3 columns]