Is the train blue or white?
The train is white.
     src        edge_attr  dst
0      0   to the left of    6
1      0  to the right of   13
2      0  to the right of    9
3      0   to the left of    7
4      0  to the right of   16
..   ...              ...  ...
136   23   to the left of   16
137   23  to the right of   10
138   23  to the right of    3
139   23   to the left of   13
140   23   on the side of   11

[141 rows x 3 columns]