Which side of the image is the curtain on?
The curtain is on the left of the image.
    src        edge_attr  dst
0     0   to the left of   13
1     0               on    1
2     0  to the right of    6
3     0  to the right of    2
4     0  to the right of    8
5     0  to the right of    5
6     1  to the right of    5
7     2  to the right of    8
8     2   to the left of   13
9     2  to the right of    5
10    2   to the left of    0
11    3  to the right of    6
12    4  to the right of    9
13    4  to the right of    5
14    5   to the left of    6
15    5   to the left of    8
16    5   to the left of   10
17    5  to the right of    9
18    5   to the left of    7
19    5   to the left of    0
20    5   to the left of    1
21    5   to the left of    2
22    5   to the left of    4
23    6   to the left of    0
24    6   to the left of    3
25    6   to the left of   13
26    6  to the right of    5
27    7  to the right of    5
28    7  to the right of    9
29    8   to the left of   13
30    8  to the right of    5
31    8   to the left of    2
32    8   to the left of    0
33    9   to the left of    7
34    9   to the left of    4
35    9   to the left of    5
36   10  to the right of    5
37   11               on   12
38   13  to the right of    0
39   13  to the right of    6
40   13  to the right of    2
41   13  to the right of    8