Which kind of food isn't purple?
The food is spinach.
   src        edge_attr  dst
0    0               in    0
1    0  to the right of    1
2    0             near    1
3    1          next to    0
4    1   to the left of    4
5    1   to the left of    0
6    4  to the right of    1
7    7               in    0