What animal is walking in the grass?
The animal is a horse.
    src        edge_attr  dst
0     1  to the right of   12
1     1   to the left of    2
2     2       walking in    0
3     2               on    0
4     2  to the right of    1
5     2  to the right of   10
6     3               of   10
7     4           behind   10
8     4  to the right of    9
9     5               of   10
10    6           behind   10
11    8               of    2
12    8  to the right of   10
13    9               of   10
14    9   to the left of    4
15   10      standing on    0
16   10      in front of    4
17   10      in front of    6
18   10   to the left of    2
19   10   to the left of    8
20   10       walking in    0
21   11               of   10
22   12               of   10
23   12   to the left of    1