Is the red bus to the left or to the right of the vehicle that is white?
The bus is to the right of the van.
    src        edge_attr  dst
0     0  to the right of   20
1     0  to the right of   14
2     1  to the right of   20
3     1  to the right of   19
4     1  to the right of   14
..  ...              ...  ...
77   20   to the left of    0
78   20   to the left of   16
79   21   to the left of    4
80   21  to the right of    6
81   21   to the left of   12

[82 rows x 3 columns]