Which color is the grass?
The grass is brown.
   src        edge_attr  dst
0    1  to the right of    3
1    1      in front of    3
2    1   to the left of    8
3    3           behind    1
4    3   to the left of    1
5    6   to the left of    8
6    7               of    1
7    8  to the right of    1
8    8  to the right of    6