What is the man on?
The man is on the surfboard.
    src        edge_attr  dst
0     0  to the right of    1
1     1   to the left of    0
2     2               in    0
3     2        on top of    4
4     2        riding on    4
5     2   to the left of    4
6     2               on    4
7     2          holding    4
8     4  to the right of    2
9     4  to the right of    5
10    5   to the left of    4