On what is the girl standing?
The girl is standing on the ski.
    src        edge_attr  dst
0     0  to the right of    9
1     0   to the left of   18
2     0  to the right of   17
3     1   to the left of   16
4     2  to the right of   12
5     3               on    5
6     3   to the left of    6
7     4   to the left of   14
8     4   to the left of   18
9     4  to the right of    9
10    5   to the left of    6
11    6  to the right of    5
12    6  to the right of    3
13    9   to the left of   13
14    9   to the left of   16
15    9   to the left of    0
16    9   to the left of    4
17   10   to the left of   18
18   12   to the left of   18
19   12   to the left of   16
20   12               on    7
21   12   to the left of    2
22   12            using    4
23   12      standing on    9
24   13  to the right of    9
25   13  to the right of   17
26   13   to the left of   18
27   13      standing on    9
28   14  to the right of    4
29   16  to the right of   12
30   16  to the right of    1
31   16  to the right of   17
32   16  to the right of    9
33   16          wearing   14
34   16          wearing   18
35   17   to the left of    0
36   17   to the left of   16
37   17   to the left of   13
38   18  to the right of    0
39   18  to the right of   12
40   18  to the right of    4
41   18  to the right of   13
42   18  to the right of   10
43   19               on    8