What's on the pole?
The flag is on the pole.
   src        edge_attr  dst
0    0             near    7
1    0  to the right of    2
2    1               on    6
3    1               on    4
4    1  to the right of    9
5    2   to the left of    0
6    7               on    6
7    7             near    0
8    8               on    6
9    9   to the left of    1