Is there a bird in the sky?
Yes, there is a bird in the sky.
   src        edge_attr  dst
0    0   to the left of    2
1    1        flying in    4
2    1     flying above    3
3    1               in    4
4    2  to the right of    0
5    5        flying in    4
6    5     flying above    3
7    6               of    1
8    7               of    1