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