Which is healthier, the vegetable of the pizza or the pizza?
The vegetable is healthier than the pizza.
    src        edge_attr  dst
0     0  to the right of    6
1     0               of    7
2     2   to the left of    8
3     2               on    5
4     3   to the left of    6
5     4               of    7
6     6               on    7
7     6   to the left of    0
8     6  to the right of    3
9     7             with    4
10    7             with    6
11    8  to the right of    2
12    8               on    5