What's on the boots?
The skis are on the boots.
    src        edge_attr  dst
0     0   to the left of   19
1     1   to the left of    4
2     1   to the left of   13
3     1   to the left of    7
4     2               on   17
5     2  to the right of    8
6     2  to the right of    6
7     2  to the right of   16
8     3   to the left of   18
9     3          wearing    7
10    4   to the left of   13
11    4  to the right of    1
12    6   to the left of    2
13    6   to the left of   12
14    7  to the right of    1
15    7   to the left of   13
16    8               on    8
17    8   to the left of    2
18    8   to the left of   12
19    9  to the right of   14
20   12  to the right of    6
21   12  to the right of    8
22   13               on   12
23   13  to the right of    4
24   13  to the right of    7
25   13  to the right of    1
26   14   to the left of    9
27   16   to the left of   19
28   16          wearing    8
29   16      skiing down   15
30   16   to the left of    2
31   18  to the right of    3
32   19  to the right of   16
33   19  to the right of    0