Are there both a helmet and a motorcycle in this scene?
No, there is a motorcycle but no helmets.
    src        edge_attr  dst
0     0   to the left of    9
1     1  to the right of   15
2     1   to the left of   12
3     3  to the right of    9
4     4  to the right of    7
5     4  to the right of    6
6     4   to the left of    8
7     4   to the left of    9
8     6   to the left of    9
9     6   to the left of    7
10    6   to the left of    4
11    7   to the left of    4
12    7   to the left of    9
13    7  to the right of    6
14    8               on    5
15    8  to the right of    4
16    9   to the left of   15
17    9  to the right of    4
18    9  to the right of    0
19    9  to the right of    7
20    9  to the right of    6
21    9   to the left of    3
22   10   to the left of   15
23   10               on    9
24   12  to the right of   15
25   12   to the left of   14
26   12  to the right of    1
27   14  to the right of   12
28   15   to the left of    1
29   15  to the right of    9
30   15  to the right of   10
31   15   to the left of   12