Is the green vehicle to the left of a train car?
No, the car is to the right of a train car.
    src        edge_attr  dst
0     0         covering    7
1     0  to the right of   14
2     0  to the right of   10
3     0  to the right of   15
4     0  to the right of    1
..  ...              ...  ...
92   17   to the left of   16
93   17  to the right of    4
94   17   to the left of    5
95   17  to the right of   12
96   17  to the right of   10

[97 rows x 3 columns]