What animals are in the green grass?
The animals are elephants.
   src        edge_attr  dst
0    2   to the left of    8
1    3               in    6
2    8  to the right of   11
3    8  to the right of    2
4    9               in    6
5   11               in    3
6   11   to the left of    8
7   11               on    3