Is the fence made of stone or wire?
The fence is made of stone.
    src        edge_attr  dst
0     0  to the right of   14
1     0  to the right of   13
2     2      in front of    3
3     2   to the left of    9
4     3           behind    2
5     4   to the left of    9
6     8  to the right of   16
7     9  to the right of    2
8     9  to the right of   14
9     9  to the right of    4
10   10             near   14
11   11  to the right of   15
12   11   to the left of   16
13   13   to the left of   16
14   13           behind   14
15   13   to the left of    0
16   14   to the left of    9
17   14   to the left of    0
18   14   to the left of   16
19   14      in front of   13
20   14             near   10
21   15   to the left of   16
22   15   to the left of   11
23   16   to the left of    8
24   16  to the right of   13
25   16  to the right of   11
26   16  to the right of   15
27   16  to the right of   14