What is on the old bed?
The bed sheet is on the bed.
   src        edge_attr  dst
0    0  to the right of    6
1    0  to the right of    2
2    1   to the left of    6
3    2   to the left of    0
4    6  to the right of    1
5    6               on    2
6    6   to the left of    0