What is the toaster oven on?
The toaster oven is on the counter.
    src       edge_attr  dst
0     1  to the left of   15
1     1  to the left of   14
2     3  to the left of   15
3     3  to the left of   14
4     3              on    1
..  ...             ...  ...
73   20  to the left of   12
74   21              in    2
75   21  to the left of    6
76   21  to the left of    7
77   21  to the left of   12

[78 rows x 3 columns]