What is leaning against the wall?
The ladder is leaning against the wall.
    src        edge_attr  dst
0     0             near    4
1     0             near   15
2     0   to the left of    9
3     1  to the right of    4
4     2  to the right of    8
5     2  to the right of   13
6     2  to the right of   10
7     3  leaning against   11
8     3  to the right of    4
9     4   to the left of   11
10    4   to the left of    1
11    4  to the right of   13
12    4             near    0
13    4   to the left of    3
14    4   to the left of   18
15    7               of    0
16    7   to the left of    9
17    8   to the left of    2
18    8   to the left of   14
19    9  to the right of   15
20    9  to the right of    7
21    9  to the right of    0
22    9  to the right of   12
23   10   to the left of    2
24   10   to the left of   14
25   11  to the right of    4
26   12   to the left of    9
27   12               of    0
28   13   to the left of   19
29   13   to the left of    4
30   13   to the left of    2
31   14  to the right of   10
32   14  to the right of    8
33   15             near    0
34   15   to the left of    9
35   18  to the right of    4
36   18               on   14
37   19  to the right of   13