What's on the bread?
The lettuce is on the bread.
    src        edge_attr  dst
0     0  to the right of   14
1     0  to the right of   10
2     0  to the right of   16
3     1   to the left of    2
4     2  to the right of   16
..  ...              ...  ...
69   16   to the left of   14
70   17   to the left of    7
71   17               on   13
72   17   to the left of   11
73   17  to the right of    3

[74 rows x 3 columns]