What color is the old car?
The car is brown.
   src        edge_attr  dst
0    0         covering    1
1    1       covered by    0
2    2   to the left of    6
3    2   to the left of    3
4    2   to the left of    8
5    3  to the right of    2
6    6  to the right of    2
7    8  to the right of    2