Who is wearing a helmet?
The boy is wearing a helmet.
    src        edge_attr  dst
0     3   to the left of   13
1     3   to the left of   18
2     4               on    3
3     6   to the left of   13
4     6               on   21
5     6   to the left of   16
6     6  to the right of   20
7     8             near    9
8     9             near    8
9     9  to the right of   17
10   10               on   21
11   10  to the right of   11
12   10   to the left of   20
13   11   to the left of   20
14   11   to the left of   10
15   12               of    7
16   13        riding on    7
17   13          wearing   17
18   13  to the right of    6
19   13  to the right of    3
20   13  to the right of   19
21   13  to the right of   21
22   13  to the right of   20
23   14               in   15
24   16  to the right of    6
25   16  to the right of   19
26   17   to the left of    9
27   18  to the right of    3
28   19   to the left of   16
29   19   to the left of   13
30   20   to the left of    6
31   20             near   21
32   20   to the left of   13
33   20  to the right of   11
34   20  to the right of   10
35   21   to the left of   13
36   21             near   20