What vehicle is in front of the sign near the road?
The vehicle is a truck.
    src        edge_attr  dst
0     0               on    6
1     0  to the right of   21
2     1           behind   16
3     1             near    3
4     1  to the right of   21
..  ...              ...  ...
80   22  to the right of    2
81   22   to the left of    9
82   23   to the left of   20
83   23   to the left of   13
84   23   to the left of   12

[85 rows x 3 columns]