What kind of vehicle is on the street that the buildings are along?
The vehicle is a van.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of   15
2     0  to the right of   16
3     1   to the left of   15
4     1   to the left of   14
5     2   to the left of    3
6     2   to the left of    8
7     2   to the left of   15
8     3  to the right of    2
9     4               by    3
10    4   to the left of   15
11    5   to the left of    9
12    6   to the left of    8
13    6   to the left of    0
14    6   to the left of   15
15    6               on   16
16    6               by    8
17    8  to the right of   16
18    8  to the right of    9
19    8  to the right of    2
20    8  to the right of    6
21    9  to the right of    5
22    9   to the left of   15
23    9   to the left of    8
24   11  to the right of   14
25   11  to the right of   15
26   14               on   15
27   14  to the right of    1
28   14   to the left of   11
29   14   to the left of   15
30   15   to the left of   11
31   15  to the right of    9
32   15  to the right of    6
33   15  to the right of    2
34   15  to the right of    1
35   15   to the left of    0
36   15  to the right of    4
37   15  to the right of   16
38   15  to the right of   14
39   16   to the left of    8
40   16   to the left of   15
41   16   to the left of    0