Who is wearing the helmet?
The man is wearing a helmet.
    src        edge_attr  dst
0     0   to the left of    7
1     1   to the left of    7
2     2  to the right of    9
3     3   to the left of    7
4     5   to the left of    7
5     7  to the right of    0
6     7  to the right of    1
7     7  to the right of    5
8     7  to the right of   12
9     7  to the right of    3
10    9   to the left of    2
11   12          wearing    0
12   12           riding    3
13   12          wearing    5
14   12        on top of    3
15   12   to the left of    7