What is the meat on top of the pizza that is topped with meat?
The meat is pepperoni.
   src        edge_attr  dst
0    1   to the left of    3
1    2          contain    7
2    3  to the right of    1
3    5        on top of    6
4    6             with    7
5    6             with    5
6    6      topped with    0
7    7        on top of    6