Is the old truck gray or yellow?
The truck is gray.
    src        edge_attr  dst
0     0   to the left of   18
1     0  to the right of    1
2     0               of   19
3     1   to the left of   11
4     1   to the left of   18
..  ...              ...  ...
64   19   to the left of   13
65   19   to the left of    2
66   19   to the left of    3
67   19   to the left of   14
68   19   to the left of    8

[69 rows x 3 columns]