Do you see either traffic lights or umbrellas in the picture?
No, there are no umbrellas or traffic lights.
   src        edge_attr  dst
0    3   to the left of    4
1    4  to the right of    3
2    4  to the right of    9
3    6               in    5
4    9               on    6
5    9               in    5
6    9   to the left of    4