Are the fence and the building made of the same material?
No, the fence is made of wood and the building is made of metal.
    src         edge_attr  dst
0     0    to the left of   11
1     0   to the right of    1
2     0   to the right of   15
3     1   to the right of    9
4     1    to the left of    0
5     1   to the right of   14
6     1    to the left of   13
7     2   to the right of   20
8     4   to the right of   16
9     4                of   22
10    4    to the left of   13
11    5   to the right of   13
12    9    to the left of    1
13    9    on the side of    7
14    9   to the right of   14
15    9    to the left of   13
16    9    to the left of   22
17    9    to the left of   15
18   11   to the right of    0
19   11   to the right of   13
20   11   to the right of   22
21   12                on   16
22   13    to the left of   19
23   13   to the right of   20
24   13   to the right of    1
25   13   to the right of    4
26   13    to the left of    5
27   13   to the right of    9
28   13    to the left of   11
29   13  standing next to   22
30   14    to the left of    9
31   14    to the left of    1
32   14    to the left of   22
33   14    to the left of   20
34   14    to the left of   15
35   15   to the right of   14
36   15   to the right of    9
37   15    to the left of    0
38   16    to the left of    4
39   18   to the right of   22
40   19   to the right of   13
41   19   to the right of   22
42   20   to the right of   14
43   20    to the left of    2
44   20    to the left of   13
45   22    to the left of   18
46   22   to the right of   14
47   22    to the left of   19
48   22    to the left of   11
49   22   to the right of    9
50   22       standing by    8