Is there a tractor next to the vehicle in front of the car?
No, there is a fire truck next to the school bus.
    src        edge_attr  dst
0     0         crossing   12
1     1   to the left of   12
2     1  to the right of    3
3     1  to the right of   16
4     1   to the left of   20
5     2               at    8
6     2  to the right of    9
7     3   to the left of   12
8     3   to the left of    1
9     3  to the right of   16
10    3   to the left of   20
11    5   to the left of   12
12    5  to the right of   17
13    6   to the left of   12
14    6  to the right of   16
15    7  to the right of   11
16    7           behind   13
17    9   to the left of   12
18    9   to the left of    2
19   11   to the left of    7
20   12  to the right of    3
21   12  to the right of    1
22   12  to the right of    5
23   12  to the right of   17
24   12  to the right of    9
25   12  to the right of    6
26   13             near   20
27   13          next to   20
28   13               on   12
29   13  to the right of   20
30   13      in front of    7
31   16   to the left of    6
32   16   to the left of    3
33   16   to the left of    1
34   17   to the left of    5
35   17   to the left of   12
36   18               on   12
37   20  to the right of    3
38   20          next to   13
39   20  to the right of    1
40   20             near   13
41   20   to the left of   13
42   20               on   12