What's the boy standing on?
The boy is standing on the surfboard.
    src        edge_attr  dst
0     0        riding on    6
1     0               on    6
2     0          wearing    4
3     0          wearing    7
4     0   to the left of    3
5     0      standing on    6
6     0        riding on    2
7     0          wearing    8
8     2   to the left of    3
9     3  to the right of    7
10    3  to the right of    8
11    3  to the right of    4
12    3  to the right of    2
13    3  to the right of    0
14    3  to the right of    5
15    3  to the right of    6
16    3               on    1
17    4   to the left of    3
18    5   to the left of    6
19    5   to the left of    3
20    6               in    1
21    6  to the right of    5
22    6               in    3
23    6   to the left of    3
24    7   to the left of    3
25    8   to the left of    3