What animal is the rock behind of, a cat or an elephant?
The rock is behind a cat.
   src        edge_attr  dst
0    0               of    7
1    2           behind    7
2    2   to the left of    8
3    2   to the left of    7
4    5               of    7
5    6           behind    7
6    7  to the right of    2
7    8  to the right of    2
8    8               of    7