Which is less healthy, the ice cream or the lettuce?
The ice cream is less healthy than the lettuce.
   src        edge_attr  dst
0    3  to the right of    6
1    4               on    8
2    6  to the right of   10
3    6   to the left of    3
4    7  to the right of    8
5    8             with    4
6    8   to the left of    7
7    9               on    8
8   10   to the left of    6