What is the color of the box on the left?
The box is white.
    src        edge_attr  dst
0     0  to the right of    1
1     1   to the left of    2
2     1   to the left of   21
3     1  to the right of    3
4     1  to the right of   18
..  ...              ...  ...
56   20   to the left of   12
57   21  to the right of   11
58   21               on   17
59   21  to the right of    2
60   21  to the right of    1

[61 rows x 3 columns]