What is the name of the dessert on the plate?
The dessert is a cake.
   src        edge_attr  dst
0    1   to the left of    4
1    1  to the right of    3
2    2               on    0
3    3   to the left of    4
4    3   to the left of    1
5    4  to the right of    3
6    4  to the right of    1