Who is on the skateboard?
The boy is on the skateboard.
    src        edge_attr  dst
0     2  to the right of    8
1     2  to the right of    6
2     3               on   11
3     4  to the right of   13
4     6   to the left of    2
5     7  to the right of   13
6     8   to the left of    2
7     9  to the right of   13
8    11  to the right of   13
9    13   to the left of    9
10   13   to the left of   11
11   13               on   12
12   13   to the left of    7
13   13   to the left of    4
14   14               of   10