Are there either surfboards or skis?
Yes, there is a surfboard.
   src        edge_attr  dst
0    0   to the left of    2
1    1   to the left of    6
2    1   to the left of    2
3    2  to the right of    3
4    2  to the right of    1
5    2  to the right of    0
6    3   to the left of    2
7    6  to the right of    1