Is the fence made of stone?
Yes, the fence is made of stone.
    src        edge_attr  dst
0     1  to the right of    6
1     1  to the right of   10
2     1  to the right of   11
3     2  to the right of    6
4     2  to the right of   10
5     2  to the right of   11
6     3   to the left of    8
7     3   to the left of   11
8     3   to the left of    7
9     3  to the right of    4
10    4   to the left of    3
11    4   to the left of    6
12    4   to the left of    7
13    5   to the left of   10
14    5  to the right of    7
15    5   to the left of   11
16    6   to the left of    2
17    6  to the right of    4
18    6   to the left of    1
19    7   to the left of    5
20    7  to the right of    4
21    7  to the right of    3
22    7   to the left of   11
23    7   to the left of    8
24    8   to the left of   11
25    8   to the left of   10
26    8  to the right of    3
27    8  to the right of    7
28    9   to the left of   11
29    9   to the left of   10
30   10   to the left of    1
31   10  to the right of    5
32   10  on the front of    6
33   10  to the right of    9
34   10  to the right of    8
35   10  to the right of   11
36   10   to the left of    2
37   11  to the right of    9
38   11  to the right of    8
39   11   to the left of   10
40   11  to the right of    3
41   11  to the right of    7
42   11  to the right of    5
43   11   to the left of    2
44   11   to the left of    1
45   11  on the front of    6