What's the knife on?
The knife is on the napkin.
    src        edge_attr  dst
0     0   to the left of   24
1     1               on   14
2     1   to the left of   24
3     2             with   18
4     2   to the left of   10
..  ...              ...  ...
87   24   to the left of    7
88   24  to the right of    1
89   24   to the left of   12
90   24  to the right of    5
91   24   to the left of    6

[92 rows x 3 columns]