Which color is the bird?
The bird is black.
   src        edge_attr  dst
0    1               on    5
1    2               in    1
2    3               of    2
3    3   to the left of    8
4    6               of    2
5    7  to the right of    9
6    8  to the right of    3
7    8               of    2
8    9   to the left of    7
9   10               on    2