On which side is the shelf?
The shelf is on the right of the image.
    src        edge_attr  dst
0     0               on   16
1     0  to the right of   22
2     0   to the left of    2
3     0   to the left of   12
4     0  to the right of   21
5     1  to the right of   14
6     1   to the left of   18
7     2  to the right of    0
8     2  to the right of   16
9     2  to the right of   21
10    3  to the right of    4
11    3  to the right of    7
12    4  to the right of   20
13    4   to the left of    3
14    4   to the left of    7
15    4   to the left of    8
16    4  to the right of   17
17    5   to the left of   17
18    7   to the left of    8
19    7  to the right of    4
20    7   to the left of    3
21    8  to the right of    7
22    8  to the right of    4
23   10  to the right of   16
24   12            above   13
25   12  to the right of    0
26   12  to the right of   21
27   12  to the right of   16
28   14   to the left of   18
29   14  to the right of   16
30   14   to the left of    1
31   16   to the left of   19
32   16  to the right of   21
33   16  to the right of   22
34   16   to the left of   10
35   16   to the left of   12
36   16   to the left of   14
37   16   to the left of    2
38   17   to the left of    4
39   17  to the right of   20
40   17  to the right of    5
41   18  to the right of    1
42   18  to the right of   14
43   19               on    2
44   19   on the side of    2
45   19  to the right of   16
46   20   to the left of   17
47   20   to the left of    4
48   21  to the right of   22
49   21   to the left of   12
50   21   to the left of    2
51   21   to the left of    0
52   21   to the left of   16
53   22   to the left of    0
54   22   to the left of   16
55   22   to the left of   21