What's on the sand?
The motorbike is on the sand.
    src        edge_attr  dst
0     0           behind    7
1     1  to the right of    5
2     3   to the left of    7
3     4   to the left of    6
4     5   to the left of    1
5     6  to the right of    4
6     7               on    6
7     7  to the right of    3
8     7      in front of    0
9     9  to the right of   10
10   10   to the left of    9