What is he on?
The man is on the skateboard.
    src        edge_attr  dst
0     4  to the right of   11
1     4  to the right of    7
2     4  to the right of   10
3     6          wearing    2
4     6               on    7
5     7   to the left of   10
6     7   to the left of    4
7     7   to the left of   13
8     8           behind    8
9     8      in front of    8
10    9   to the left of   12
11    9   to the left of   13
12   10      hanging off    7
13   10  to the right of    7
14   10   to the left of    4
15   11  to the right of   14
16   11   to the left of    4
17   12  to the right of    9
18   12   to the left of   13
19   13  to the right of   12
20   13  to the right of    9
21   13  to the right of    7
22   14   to the left of   11