The vehicle on the left side has which color?
The bus is white.
    src        edge_attr  dst
0     0   to the left of   15
1     0   to the left of   11
2     0  to the right of   16
3     0   to the left of   20
4     0   to the left of   13
..  ...              ...  ...
66   17   to the left of    3
67   17   to the left of    9
68   20  to the right of    1
69   20  to the right of    9
70   20  to the right of    0

[71 rows x 3 columns]