What does the motorcyclist ride?
The motorcyclist rides a motorcycle.
   src        edge_attr  dst
0    0               on    3
1    0           riding    3
2    0          wearing    7
3    0   to the left of    6
4    2               on    3
5    5               of    3
6    5   to the left of    6
7    6  to the right of    5
8    6               of    3
9    6  to the right of    0