Is there any tall grass or snow?
No, there is grass but it is short.
   src        edge_attr  dst
0    0   to the left of    4
1    1   to the left of    4
2    3   to the left of    5
3    3   to the left of    7
4    4  to the right of    1
5    4  to the right of    0
6    5  to the right of    3
7    7  to the right of    3