The biker to the right of the man is riding what?
The motorcyclist is riding a bike.
    src        edge_attr  dst
0     0   to the left of    8
1     1          wearing   17
2     1   to the left of   10
3     1  to the right of    9
4     1   to the left of   12
5     1  to the right of   11
6     1  to the right of    4
7     1   to the left of   15
8     3   to the left of   11
9     4   to the left of    1
10    4   to the left of   14
11    6  to the right of    7
12    6   to the left of    9
13    6   to the left of   11
14    7   to the left of   11
15    7   to the left of    6
16    8   to the left of   16
17    8  to the right of    0
18    9   to the left of    1
19    9  to the right of    6
20   10  to the right of   17
21   10  to the right of    1
22   11  to the right of    7
23   11  to the right of    3
24   11   to the left of    1
25   11  to the right of    6
26   11           riding    9
27   11   to the left of   17
28   12  to the right of    1
29   12  to the right of   14
30   12  to the right of   17
31   14  to the right of    4
32   14   to the left of   12
33   14   to the left of   15
34   15          wearing   12
35   15  to the right of    1
36   15  to the right of   14
37   15  to the right of   17
38   16  to the right of    8
39   17   to the left of   15
40   17   to the left of   12
41   17  to the right of   11
42   17   to the left of   10