What animal is grazing on grass?
The sheep is grazing on grass.
    src        edge_attr  dst
0     0   to the left of   15
1     1  to the right of   14
2     3   to the left of   15
3     5   to the left of    7
4     5   to the left of   15
5     6  to the right of    9
6     6       grazing on   10
7     7  to the right of    5
8     7  to the right of   13
9     7  to the right of    8
10    7   to the left of   11
11    7   to the left of   15
12    8   to the left of   13
13    8   to the left of    7
14    8   to the left of   15
15    8         touching    2
16    9   to the left of    6
17   11  to the right of   12
18   11               in   15
19   11  to the right of    7
20   12           eating    0
21   12       grazing on   10
22   12   to the left of   15
23   12   to the left of   11
24   13  to the right of    8
25   13   to the left of    7
26   13   to the left of   15
27   14   to the left of    1
28   14       grazing on   10
29   15  to the right of    7
30   15  to the right of    3
31   15  to the right of   13
32   15  to the right of   12
33   15  to the right of    8
34   15  to the right of    0
35   15  to the right of    5