What is the boy on?
The boy is on the skateboard.
   src        edge_attr  dst
0    1   to the left of    7
1    1  to the right of    6
2    4   to the left of    7
3    5          wearing    0
4    5               on    2
5    5          wearing    3
6    6   to the left of    1
7    7  to the right of    4
8    7  to the right of    1