What color is the box to the right of the other box?
The box is green.
   src        edge_attr  dst
0    0  to the right of    3
1    1  to the right of    7
2    3               in    2
3    3   to the left of    0
4    7   to the left of    1
5    8  to the right of   10
6    8  to the right of    9
7    9       stacked on   10
8    9   to the left of    8
9   10   to the left of    8