What is the vehicle to the right of the black locomotive?
The vehicle is a train car.
    src        edge_attr  dst
0     2  to the right of    3
1     2  to the right of    4
2     2   to the left of   15
3     2  to the right of    6
4     2  to the right of    5
..  ...              ...  ...
61   17   to the left of   18
62   17   to the left of    8
63   18  to the right of    8
64   18  to the right of   17
65   18   to the left of   10

[66 rows x 3 columns]