Are there any wooden fences or zebras?
Yes, there is a wood zebra.
    src        edge_attr  dst
0     1  to the right of   15
1     1  to the right of    7
2     1  to the right of    9
3     1  to the right of    6
4     1  to the right of    5
5     2  to the right of   16
6     2  to the right of    3
7     3   to the left of    2
8     3  to the right of    6
9     4  to the right of    7
10    4  to the right of    6
11    4  to the right of   15
12    4  to the right of    5
13    4   to the left of    8
14    5   to the left of   16
15    5   to the left of   11
16    5  to the right of   15
17    5  to the right of    9
18    5  to the right of    6
19    5  to the right of    7
20    5   to the left of    4
21    5   to the left of    1
22    6   to the left of    3
23    6   to the left of   16
24    6   to the left of    4
25    6   to the left of    5
26    6   to the left of    1
27    7   to the left of    1
28    7   to the left of    4
29    7   to the left of   16
30    7   to the left of    5
31    8  to the right of   16
32    8  to the right of   11
33    8               of    1
34    8  to the right of    4
35    9   to the left of    5
36    9   to the left of    1
37    9   to the left of   15
38    9   to the left of   10
39   10  to the right of    9
40   10  to the right of   15
41   11  to the right of    5
42   11   to the left of    8
43   15  to the right of    9
44   15   to the left of    1
45   15   to the left of   10
46   15   to the left of    4
47   15   to the left of    5
48   16   to the left of    2
49   16   to the left of    8
50   16               on    1
51   16  to the right of    5
52   16  to the right of    7
53   16  to the right of    6
54   16          wearing    3