Is the ground snowy or grassy?
The ground is grassy.
   src        edge_attr  dst
0    1   to the left of    7
1    2   to the left of    7
2    7  to the right of    2
3    7  to the right of    1
4    7  to the right of   10
5    8  to the right of   10
6   10   to the left of    8
7   10   to the left of    7