Are there any surfboards?
Yes, there is a surfboard.
   src        edge_attr  dst
0    0               in    2
1    1               in    7
2    3               on    1
3    3          wearing    4
4    4  to the right of    6
5    5               of    3
6    5  to the right of    6
7    6               of    3
8    6   to the left of    4
9    6   to the left of    5