Is the fence behind the zebra wooden or metallic?
The fence is metallic.
    src        edge_attr  dst
0     0   to the left of    1
1     1   to the left of   12
2     1  to the right of    0
3     1  to the right of   10
4     1  to the right of    6
5     3           behind    4
6     3               in    9
7     3             near    8
8     3   to the left of    6
9     4               in    9
10    4      in front of   10
11    4      in front of    8
12    4      standing in    9
13    4      in front of    6
14    4      in front of   12
15    4      in front of   13
16    4      in front of    3
17    5  to the right of   12
18    5           behind    9
19    5  to the right of   13
20    6               in    9
21    6  to the right of    8
22    6  to the right of    7
23    6   to the left of   13
24    6   to the left of   12
25    6           behind    4
26    6  to the right of    3
27    6   to the left of    1
28    7   to the left of    6
29    8           behind    4
30    8           behind    9
31    8             near    3
32    8   to the left of    6
33   10   to the left of   13
34   10   to the left of   12
35   10           behind    4
36   10   to the left of    1
37   11               in    9
38   11               on    9
39   12               in    9
40   12  to the right of    1
41   12   to the left of    5
42   12  to the right of    6
43   12  to the right of   10
44   12  to the right of   13
45   12           behind    4
46   13   to the left of   12
47   13               in    9
48   13   to the left of    5
49   13  to the right of    6
50   13  to the right of   10
51   13           behind    4