What type of furniture is this, a couch or a bed?
This is a couch.
   src        edge_attr  dst
0    0   to the left of    2
1    0   to the left of    1
2    1  to the right of    5
3    1  to the right of    0
4    2  to the right of    5
5    2  to the right of    0
6    5   to the left of    1
7    5               on    0
8    5   to the left of    2