Is the tree behind a horse?
Yes, the tree is behind a horse.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of   13
2     0  to the right of   14
3     2  to the right of    3
4     2   to the left of   10
5     3   to the left of    5
6     3   to the left of   10
7     3   to the left of    2
8     3   to the left of    7
9     4   to the left of    5
10    4   to the left of    7
11    5  to the right of    4
12    5  to the right of   14
13    5  to the right of    3
14    5      in front of   13
15    5  to the right of    6
16    6   to the left of    5
17    6   to the left of   10
18    7  to the right of    3
19    7  to the right of    4
20    7  to the right of   14
21    8   to the left of   11
22    8   to the left of   12
23    8   to the left of   13
24    9  to the right of   15
25    9   to the left of   13
26   10  to the right of    3
27   10  to the right of    6
28   10  to the right of    2
29   11  to the right of    0
30   11  to the right of    8
31   11   to the left of   13
32   12   to the left of   13
33   12  to the right of    8
34   13  to the right of   11
35   13  to the right of   12
36   13           behind    5
37   13  to the right of   15
38   13  to the right of    9
39   13  to the right of    0
40   13  to the right of    8
41   14   to the left of    5
42   14   to the left of    0
43   14   to the left of    7
44   15   to the left of   13
45   15   to the left of    9