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