On which side are the long curtains?
The curtains are on the left of the image.
    src        edge_attr  dst
0     0               of   15
1     0   to the left of    2
2     1   to the left of    3
3     1   to the left of    8
4     1   to the left of    7
..  ...              ...  ...
63   16  to the right of    6
64   16   to the left of    8
65   16  to the right of    1
66   17   to the left of    2
67   17               of   15

[68 rows x 3 columns]