Do you see either any onion rings or onions?
Yes, there is an onion.
   src        edge_attr  dst
0    0  to the right of    5
1    1  to the right of    5
2    3             with    5
3    3               on    4
4    5               on    3
5    5               on    2
6    5   to the left of    1
7    5   to the left of    0