What's the fence made of?
The fence is made of metal.
    src        edge_attr  dst
0     0   to the left of   12
1     0  to the right of    4
2     0   to the left of   11
3     0  to the right of   13
4     2  to the right of   13
5     3  to the right of   13
6     4   to the left of    5
7     4   to the left of   12
8     4  to the right of   13
9     4   to the left of    0
10    4   to the left of    6
11    5   to the left of    6
12    5  to the right of   13
13    5   to the left of   11
14    5  to the right of    4
15    5   to the left of   12
16    6          holding    0
17    6         swinging    0
18    6  to the right of    5
19    6  to the right of    4
20    6          hitting    4
21    6  to the right of    7
22    6  to the right of   13
23    7   to the left of    6
24    7               on    1
25    8  to the right of   10
26    9  to the right of   10
27   10   to the left of    8
28   10   to the left of    9
29   11  to the right of    0
30   11  to the right of    5
31   12  to the right of    4
32   12  to the right of    5
33   12  to the right of   13
34   12  to the right of    0
35   13   to the left of    2
36   13   to the left of    4
37   13   to the left of   12
38   13   to the left of    3
39   13   to the left of    5
40   13   to the left of    6
41   13   to the left of    0