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