Are there any skis?
No, there are no skis.
   src        edge_attr  dst
0    0             near    3
1    1   to the left of    2
2    2  to the right of   11
3    2  to the right of    1
4    3             near    0
5    4   to the left of   11
6   11  to the right of    4
7   11   to the left of    2