What kind of animal is on the grass?
The animals are horses.
    src        edge_attr  dst
0     0               on    9
1     1               on    4
2     1           eating    4
3     1       grazing on    4
4     1  to the right of    8
5     1  to the right of   11
6     5      in front of    9
7     8               on    4
8     8   to the left of    1
9     8           eating    4
10    9           behind    5
11   11   to the left of    1