Is the container on the right side?
No, the container is on the left of the image.
   src        edge_attr  dst
0    3   to the left of    4
1    4  to the right of    5
2    4  to the right of    3
3    4   to the left of    7
4    5       sitting on    0
5    5   to the left of    4
6    7  to the right of    4