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