Who wears the helmet?
The boy wears a helmet.
    src        edge_attr  dst
0     0  to the right of    3
1     1   to the left of   15
2     1  to the right of    7
3     1   to the left of    2
4     2  to the right of    1
..  ...              ...  ...
78   15  to the right of   14
79   15  to the right of   10
80   15  to the right of   11
81   15  to the right of    1
82   16   to the left of    5

[83 rows x 3 columns]