Are the spots on top of the ground?
Yes, the spots are on top of the ground.
   src        edge_attr  dst
0    2  on the front of    1
1    3        on top of    5
2    4   to the left of    9
3    4  on the front of    5
4    8           inside    6
5    8        on top of    0
6    9  to the right of    4
7    9        on top of    0
8   10           inside    7