Is the plastic bag to the left or to the right of the white truck?
The bag is to the left of the truck.
    src        edge_attr  dst
0     1               of    2
1     1   to the left of   17
2     1   to the left of    6
3     1   to the left of   21
4     2   to the left of    9
..  ...              ...  ...
93   21  to the right of   17
94   21  to the right of    2
95   21  to the right of    1
96   21  to the right of   16
97   21   to the left of    5

[98 rows x 3 columns]