Does the train of the containers have blue color and long length?
No, the train is long but red.
   src        edge_attr  dst
0    2  to the right of   10
1    2               of    9
2    2               of    6
3    2               of   10
4    2  to the right of    9
5    9  to the right of   10
6    9   to the left of    2
7   10   to the left of    9
8   10   to the left of    2