What is that tag on?
The tag is on the picture.
   src        edge_attr  dst
0    0  to the right of    3
1    2  to the right of    3
2    3   to the left of    2
3    3   to the left of    0
4    4  to the right of    5
5    4  to the right of    7
6    5   to the left of    4
7    6               on   10
8    7   to the left of    4