Is the grass green and clear?
Yes, the grass is green and clear.
   src        edge_attr  dst
0    0   to the left of    6
1    1       looking at    2
2    1               on    2
3    1           eating    2
4    1           behind    7
5    6  to the right of    0
6    7      in front of    1
7    8               of    1
8    9               of    1