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