Who is wearing a vest?
The skier is wearing a vest.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of   14
2     7               in    4
3     8               in    4
4     8          wearing   11
5     8          wearing    1
6     8          wearing    0
7     8          wearing    5
8     8          wearing   12
9     8          wearing   18
10    8          wearing   10
11    9   to the left of   17
12    9   to the left of   10
13   10  to the right of    9
14   10  to the right of   18
15   11  to the right of    0
16   11  to the right of   15
17   12               on    6
18   13               on   12
19   14  to the right of   15
20   14  to the right of    0
21   15   to the left of   14
22   15   to the left of   11
23   17  to the right of    9
24   17  to the right of   18
25   18   to the left of   10
26   18   to the left of   17