Who is sitting on the motorbike the man is driving?
The boy is sitting on the motorcycle.
     src        edge_attr  dst
0      0       driving on    1
1      0           riding    7
2      0  to the right of    9
3      2  to the right of    3
4      2   to the left of   12
..   ...              ...  ...
100   18               on    7
101   18  to the right of    2
102   18  to the right of    6
103   19   to the left of    4
104   19   to the left of   18

[105 rows x 3 columns]