Who is wearing the helmet?
The officer is wearing a helmet.
    src        edge_attr  dst
0     0   to the left of   17
1     1   to the left of    8
2     1   to the left of   15
3     1           riding    7
4     1   to the left of   16
..  ...              ...  ...
67   21  to the right of    9
68   21   to the left of    6
69   21   to the left of   18
70   21   to the left of   11
71   21      standing on   10

[72 rows x 3 columns]