Where is the airplane?
The airplane is in the sky.
   src        edge_attr  dst
0    0  to the right of    1
1    0  to the right of    5
2    1   to the left of    0
3    2   to the left of    9
4    2               of    8
5    5   to the left of    0
6    8        flying in    4
7    8               in    3
8    9  to the right of    2