Which color is the cash register?
The cash register is white.
    src       edge_attr  dst
0     0  to the left of    8
1     0  to the left of   14
2     0  to the left of   12
3     0  to the left of    3
4     0  to the left of    6
..  ...             ...  ...
62   17  to the left of    3
63   17  to the left of   10
64   17  to the left of   14
65   17          eating    5
66   17  to the left of   12

[67 rows x 3 columns]