Is the computer mouse on the left or on the right?
The computer mouse is on the right of the image.
   src        edge_attr  dst
0    1  to the right of    4
1    1  to the right of    6
2    2               on    3
3    4   to the left of    1
4    6   to the left of    1
5    6               on    3
6    8               on    3