What do you think is on the wall?
The sign is on the wall.
   src        edge_attr  dst
0    2               on    6
1    3  to the right of    6
2    3  to the right of    4
3    4            below    5
4    4   to the left of    3
5    5            above    4
6    5               on    1
7    6   to the left of    3