Is the tree behind a horse?
No, the tree is behind the fence.
    src        edge_attr  dst
0     0   to the left of    1
1     1      in front of   10
2     1  to the right of    0
3     2  to the right of   19
4     2   to the left of   10
5     3          wearing    6
6     3          wearing   12
7     3  to the right of   20
8     3               on    4
9     3          wearing    8
10    3  to the right of   11
11    3  to the right of   15
12    3   to the left of   18
13    3   to the left of   17
14    3  to the right of    9
15    3           riding    4
16    5  to the right of   20
17    7  to the right of    8
18    7  to the right of   11
19    7  to the right of   16
20    7   to the left of   17
21    8  to the right of   11
22    8   to the left of    7
23    8   to the left of   17
24    9   to the left of   12
25    9   to the left of    3
26   10  to the right of   19
27   10  to the right of   20
28   10  to the right of    2
29   10           behind    1
30   10   to the left of   14
31   11   to the left of    7
32   11   to the left of   16
33   11   to the left of    8
34   11   to the left of    3
35   12  to the right of   15
36   12   to the left of   18
37   12  to the right of    9
38   14  to the right of   10
39   15   to the left of   12
40   15               of    4
41   15   to the left of    3
42   16   to the left of    7
43   16  to the right of   20
44   16  to the right of   11
45   16               of    4
46   17               of    4
47   17  to the right of    7
48   17  to the right of    3
49   17  to the right of    8
50   18               of    4
51   18  to the right of    3
52   18  to the right of   12
53   19   to the left of    2
54   19   to the left of   10
55   19   on the side of   20
56   20   to the left of    5
57   20   to the left of   10
58   20   to the left of    3
59   20   to the left of   16