What kind of vehicle is on the road?
The vehicle is a van.
    src        edge_attr  dst
0     1               on    0
1     1  to the right of    9
2     1  to the right of    3
3     2               on   14
4     2          wearing    4
5     2          wearing    5
6     2  to the right of   11
7     2          wearing    3
8     3   to the left of    1
9     3   to the left of    6
10    3  to the right of   11
11    4  to the right of   12
12    6  to the right of    9
13    6  to the right of    3
14    8               on    6
15    9   to the left of    6
16    9  to the right of   13
17    9  to the right of   16
18    9   to the left of    1
19   11   to the left of    2
20   11   to the left of    3
21   12   to the left of    4
22   12            below   14
23   13   to the left of    9
24   16   to the left of    9