What's the snow on?
The snow is on the ski.
    src        edge_attr  dst
0     0               on    9
1     1   to the left of    6
2     3               on   14
3     3   to the left of    6
4     4               on   11
5     6  to the right of   14
6     6  to the right of   13
7     6  to the right of    3
8     6  to the right of    1
9    10          wearing   13
10   10          wearing    8
11   11   to the left of   15
12   13   to the left of    6
13   14   to the left of    6
14   15  to the right of   11