What animal is the tree behind of?
The tree is behind the elephant.
    src        edge_attr  dst
0     0  to the right of    8
1     1  to the right of    8
2     3  to the right of    8
3     4           behind    8
4     4   to the left of    8
5     4   to the left of   13
6     7  to the right of    8
7     8      in front of    4
8     8   to the left of    1
9     8   to the left of    0
10    8  to the right of    4
11    8   to the left of    3
12    8   to the left of    9
13    8   to the left of    7
14    8   to the left of   12
15    8  to the right of   11
16    9          wearing    0
17    9          wearing    3
18    9  to the right of    8
19   11   to the left of    8
20   12  to the right of    8
21   13  to the right of    4