On which side of the picture is the curtain?
The curtain is on the left of the image.
    src        edge_attr  dst
0     0   to the left of    4
1     0   to the left of   10
2     0   to the left of   12
3     0   to the left of    7
4     0   to the left of    8
5     0   to the left of    9
6     0   to the left of   14
7     0   to the left of    6
8     1   to the left of   14
9     1   to the left of   10
10    1   to the left of    8
11    1   to the left of    7
12    1   to the left of    6
13    1   to the left of    4
14    2   to the left of   11
15    2   to the left of    5
16    3               on    4
17    3               on    2
18    3  to the right of    8
19    3  to the right of    7
20    4               by   12
21    4  to the right of    1
22    4  to the right of    0
23    5  to the right of    2
24    5  to the right of    9
25    5  to the right of   12
26    5  to the right of   11
27    5  to the right of   13
28    6   to the left of    7
29    6  to the right of    1
30    6  to the right of    0
31    6               on    4
32    7  to the right of    0
33    7  to the right of    1
34    7               on   12
35    7  to the right of    6
36    7   to the left of    3
37    8   to the left of    3
38    8  to the right of    1
39    8  to the right of    0
40    9   to the left of    5
41    9  to the right of    0
42    9   to the left of   11
43   10  to the right of    0
44   10  to the right of    1
45   11   to the left of    5
46   11  to the right of    9
47   11  to the right of    2
48   12   to the left of    5
49   12  to the right of    0
50   13   to the left of    5
51   14  to the right of    0
52   14  to the right of    1