Does the train car to the right of the train have black color?
Yes, the train car is black.
    src        edge_attr  dst
0     0  to the right of   18
1     0  to the right of    2
2     0   to the left of    8
3     0  to the right of   17
4     0  to the right of   10
..  ...              ...  ...
81   19   to the left of    4
82   19   to the left of    6
83   20   to the left of    9
84   20  to the right of   18
85   21  to the right of   19

[86 rows x 3 columns]