Are the hills in front of the field brown and grassy?
Yes, the hills are brown and grassy.
   src        edge_attr  dst
0    0      in front of    7
1    0            above    7
2    0            below    1
3    0      in front of    1
4    1           behind    0
5    2        on top of    0
6    3   to the left of    5
7    5  to the right of    3