Is the staircase black or beige?
The staircase is beige.
   src        edge_attr  dst
0    2   to the left of    8
1    2   to the left of    7
2    6   to the left of   11
3    7               on    8
4    7  to the right of    2
5    8  to the right of    2
6   11  to the right of    6