What color is the train in the middle of the photo?
The train is black.
    src       edge_attr  dst
0     0              on   14
1     0  to the left of   10
2     1  to the left of   17
3     1  to the left of   20
4     1  to the left of   18
..  ...             ...  ...
91   20  to the left of    7
92   20  to the left of   18
93   20              on   21
94   21  to the left of   18
95   21  to the left of    7

[96 rows x 3 columns]