Is the truck to the left or to the right of the car on the right?
The truck is to the right of the car.
    src        edge_attr  dst
0     0  to the right of   18
1     0   to the left of   21
2     1   to the left of   16
3     1   to the left of   14
4     1  to the right of    2
..  ...              ...  ...
67   21  to the right of    7
68   21  to the right of   12
69   21  to the right of    4
70   21  to the right of    5
71   21  to the right of    0

[72 rows x 3 columns]