What is the pole behind of, a table or a bookcase?
The pole is behind a table.
   src    edge_attr  dst
0    0           on    5
1    0         near    1
2    1      next to    0
3    2       behind    7
4    3           on    5
5    4           on    5
6    6           in    0
7    6           on    5
8    7  in front of    2