What is on the wall?
The painting is on the wall.
    src        edge_attr  dst
0     0   to the left of    9
1     1   to the left of    9
2     2               on   13
3     4   to the left of    9
4     5   to the left of    9
5     7  to the right of   12
6     7               on    9
7     8      in front of    9
8     9  to the right of    5
9     9  to the right of    1
10    9  to the right of    0
11    9  to the right of   12
12    9  to the right of    4
13    9  to the right of   11
14   10  to the right of   12
15   11   to the left of    9
16   12   to the left of    7
17   12            using    5
18   12   to the left of    9
19   12   to the left of   10
20   14   to the left of   15
21   15  to the right of   14