Do you see any flags on the street light?
Yes, there is a flag on the street light.
    src        edge_attr  dst
0     0   to the left of   16
1     0   to the left of   14
2     0   to the left of   17
3     0   to the left of    3
4     0   to the left of    2
..  ...              ...  ...
90   18  to the right of    3
91   19  to the right of   16
92   19  to the right of   20
93   20   to the left of   19
94   20   to the left of   10

[95 rows x 3 columns]