What animal is in the water?
The zebra is in the water.
   src        edge_attr  dst
0    2  to the right of    4
1    2  to the right of    7
2    4   to the left of    2
3    6  to the right of    7
4    7   to the left of    6
5    7   to the left of    2
6    9               in    8
7    9      swimming in    8