The person that is skateboarding is standing on what?
The man is standing on the skateboard.
    src         edge_attr  dst
0     1   to the right of   10
1     1    to the left of   17
2     1   to the right of   13
3     2         on top of   13
4     3    to the left of    9
5     3    to the left of   14
6     4  on the bottom of    7
7     8    to the left of    9
8     8    to the left of   14
9     9   to the right of    8
10    9   to the right of    3
11   10    to the left of    1
12   11   to the right of   12
13   12    to the left of   11
14   13    to the left of    1
15   14   to the right of    8
16   14   to the right of    3
17   15         riding on    7
18   15            inside    0
19   15           wearing    2
20   15       in front of   16
21   15           wearing    1
22   15           wearing    6
23   15       standing on    7
24   15    to the left of   17
25   17   to the right of    1
26   17   to the right of   15