What animal is in front of the trees?
The cow is in front of the trees.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    2
2     0  to the right of    9
3     0  to the right of    8
4     2   to the left of    0
5     2   to the left of    5
6     4   to the left of    0
7     4   to the left of    6
8     5  to the right of    2
9     5           behind   10
10    6  to the right of    4
11    7  to the right of    9
12    8   to the left of    0
13    9               on   10
14    9   to the left of    0
15    9   to the left of    7
16   10               in   11
17   10               on   11
18   10          wearing    9
19   10      in front of    5
20   10          wearing    6