What is the surfboard on?
The surfboard is on the car.
    src        edge_attr  dst
0     0      in front of   10
1     0  to the right of    5
2     5   to the left of    0
3     5               by   10
4     5   to the left of    9
5     7   to the left of   11
6     7               on    5
7     9               by   10
8     9  to the right of    5
9    10  to the right of   12
10   10           behind    0
11   11  to the right of    7
12   12   to the left of   10