What animal is the grass behind of?
The grass is behind the horse.
    src        edge_attr  dst
0     0   to the left of    4
1     0      in front of    3
2     0      in front of   12
3     1               of    3
4     1  to the right of    3
5     3           behind    0
6     3   to the left of    1
7     4  to the right of    5
8     4  to the right of    0
9     4  to the right of    6
10    5  to the right of   10
11    5  to the right of    7
12    5               of    0
13    5  to the right of    6
14    5   to the left of    4
15    6   to the left of    4
16    6   to the left of    5
17    6  to the right of    7
18    6  to the right of   10
19    6               of    0
20    7   to the left of    5
21    7   to the left of    6
22    7  to the right of   10
23    7               of    0
24    7  to the right of   15
25    8  to the right of    9
26    9   to the left of    8
27   10   to the left of    5
28   10   to the left of    7
29   10   to the left of    6
30   10               of    0
31   10  to the right of   15
32   12           behind    0
33   15   to the left of    7
34   15   to the left of   10