Are there any bikes or flags?
Yes, there is a bike.
    src        edge_attr  dst
0     0   to the left of   11
1     0  to the right of   12
2     0   to the left of   10
3     0   to the left of   18
4     0   to the left of   17
..  ...              ...  ...
92   19   to the left of   17
93   20  to the right of   18
94   20  to the right of   17
95   20  to the right of   13
96   20  to the right of    9

[97 rows x 3 columns]