What is on the pole?
The stop sign is on the pole.
   src        edge_attr  dst
0    0               on    5
1    0               on    1
2    0            above    1
3    0  to the right of    6
4    2               on    0
5    2  to the right of    6
6    3               on    5
7    6   to the left of    2
8    6   to the left of    0
9    6               of    3