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