Is the knife to the left of a pizza?
No, the knife is to the left of the radiator.
    src        edge_attr  dst
0     0   to the left of   26
1     0   to the left of   23
2     1   to the left of   23
3     1  to the right of    8
4     2   to the left of   17
..  ...              ...  ...
82   28   to the left of   16
83   28   to the left of   11
84   28   to the left of   10
85   29   to the left of   10
86   29   to the left of   26

[87 rows x 3 columns]