Who is on the bike?
The motorcyclist is on the bike.
    src        edge_attr  dst
0     0  to the right of    3
1     0   to the left of    2
2     0  to the right of    1
3     0  to the right of   16
4     1   to the left of    6
5     1   to the left of    8
6     1   to the left of    2
7     1   to the left of    0
8     1  to the right of   17
9     1   to the left of    9
10    2  to the right of    3
11    2  to the right of    0
12    2  to the right of    1
13    2  to the right of   16
14    3  to the right of   18
15    3   to the left of    6
16    3  to the right of    4
17    3  to the right of   19
18    3   to the left of    9
19    3   to the left of    2
20    3   to the left of    0
21    4   to the left of    3
22    5  to the right of   15
23    6  to the right of    3
24    6  to the right of   16
25    6  to the right of    1
26    7   to the left of    8
27    7  to the right of   17
28    8               of   12
29    8  to the right of    7
30    8  to the right of    1
31    8  to the right of   16
32    9  to the right of    3
33    9  to the right of   16
34    9  to the right of   18
35    9  to the right of    1
36   10           behind   11
37   11      in front of   10
38   13   on the side of   14
39   15   to the left of    5
40   16          wearing    1
41   16      in front of   17
42   16   to the left of    0
43   16   to the left of    2
44   16   to the left of    8
45   16  to the right of   17
46   16   to the left of    6
47   16   to the left of    9
48   16           riding   12
49   16               on   12
50   17   to the left of    1
51   17   to the left of    7
52   17   to the left of   16
53   18   to the left of    9
54   18   to the left of    3
55   19   to the left of    3
56   19               on    4