What is on the grass?
The bike is on the grass.
   src        edge_attr  dst
0    0   to the left of    4
1    1   to the left of    2
2    2  to the right of    1
3    2  to the right of    3
4    3   to the left of    2
5    3   to the left of    4
6    3               on    6
7    4  to the right of    3
8    4               in    6
9    4  to the right of    0