Which is healthier, the pizza or the zucchini?
The zucchini is healthier than the pizza.
    src        edge_attr  dst
0     1   to the left of   10
1     2   to the left of   10
2     3               on    8
3     3               on    2
4     3   to the left of   10
5     4               on    5
6     6  to the right of    7
7     6   to the left of   10
8     7   to the left of    6
9     8   to the left of   10
10    9               on    5
11    9               by    2
12    9             with    0
13    9               of    0
14   10               by    2
15   10  to the right of    2
16   10  to the right of    3
17   10  to the right of    6
18   10  to the right of    8
19   10  to the right of    1