Are there any vans on the road?
No, there is a car on the road.
    src        edge_attr  dst
0     0  to the right of   15
1     1  to the right of    2
2     1               on   12
3     1          wearing   10
4     1  to the right of   13
5     1  to the right of   14
6     1          holding    0
7     1    standing near   12
8     1          wearing    4
9     2  to the right of    8
10    2  to the right of   11
11    2   to the left of    5
12    2   to the left of   10
13    2   to the left of    1
14    2   to the left of    7
15    2               of    3
16    4  to the right of   13
17    5  to the right of    2
18    6   to the left of    8
19    6   to the left of   13
20    7  to the right of    2
21    8  to the right of    6
22    8   to the left of    2
23    8   to the left of   13
24    9  to the right of   14
25   10  to the right of    2
26   11               on   12
27   11   to the left of   13
28   11   to the left of    2
29   13  to the right of    8
30   13  to the right of   11
31   13   to the left of    1
32   13   to the left of    4
33   13  to the right of    6
34   13               on   12
35   14   to the left of    9
36   14   to the left of    1
37   14               on   12
38   15   to the left of    0