What is the dessert on?
The dessert is on the napkin.
   src        edge_attr  dst
0    1   to the left of    5
1    1   to the left of    3
2    3  to the right of    1
3    4  to the right of   11
4    5  to the right of    1
5    6               on    5
6    6   to the left of    7
7    7  to the right of    6
8    7               on    5
9   11   to the left of    4