What food is white, the pepperoni or the cheese?
The cheese is white.
    src        edge_attr  dst
0     2  to the right of   17
1     5  to the right of   15
2     5  to the right of   18
3     8   to the left of   18
4     8   to the left of   21
5     9  to the right of   22
6    15   to the left of    5
7    16   to the left of   18
8    17   to the left of    2
9    17   to the left of   22
10   18   to the left of    5
11   18  to the right of    8
12   18  to the right of   16
13   19               on   10
14   19             with   20
15   19               in   14
16   19               on   16
17   20               on   19
18   21  to the right of    8
19   22   to the left of    9
20   22  to the right of   17