Are there any napkins to the left of the plates that the sandwiches are to the right of?
No, there are containers to the left of the plates.
     src       edge_attr  dst
0      0  to the left of   11
1      0  to the left of   10
2      0              of   22
3      0  to the left of    2
4      0              of   23
..   ...             ...  ...
106   24  to the left of    2
107   24  to the left of    9
108   24  to the left of   10
109   24  to the left of   18
110   24              in   18

[111 rows x 3 columns]