Is the boy to the right of the person riding on a skateboard?
Yes, the boy is riding on a skateboard.
   src        edge_attr  dst
0    0   to the left of    8
1    0        riding on    1
2    0  to the right of    5
3    4   to the left of    5
4    5  to the right of    4
5    5   to the left of    0
6    5   to the left of    8
7    7          wearing    6
8    8  to the right of    5
9    8  to the right of    0