Do you see either chairs or windows there?
Yes, there is a window.
    src        edge_attr  dst
0     0   to the left of   17
1     0  to the right of   16
2     1   to the left of   10
3     1  to the right of    9
4     1  to the right of   18
..  ...              ...  ...
62   19  to the right of   20
63   20   to the left of   11
64   20   to the left of   19
65   20   to the left of   14
66   21          next to    5

[67 rows x 3 columns]