Are there any vans to the left of the policeman that is wearing glasses?
No, there is a bike to the left of the policeman.
    src        edge_attr  dst
0     0   to the left of    5
1     0   to the left of    6
2     0  to the right of   15
3     0  to the right of    2
4     0   to the left of   16
..  ...              ...  ...
66   16  to the right of    3
67   16  to the right of    0
68   16   to the left of    9
69   16  to the right of    1
70   16   to the left of   14

[71 rows x 3 columns]