What is the car behind of, a train or a van?
The car is behind a van.
    src        edge_attr  dst
0     0      in front of    9
1     0             near   10
2     0               on   15
3     0   to the left of    4
4     0  to the right of    9
5     0  to the right of   18
6     1  to the right of   14
7     2   to the left of   10
8     3   to the left of   16
9     3  to the right of    7
10    3  to the right of   17
11    3           behind    8
12    4  to the right of    0
13    4  to the right of    6
14    4               on   10
15    5  to the right of   18
16    5          next to   15
17    6   to the left of   10
18    6   to the left of   16
19    6  to the right of   13
20    6   to the left of    4
21    6  to the right of   17
22    7               in    0
23    7  to the right of   17
24    7   to the left of    3
25    7   to the left of    8
26    7  to the right of   13
27    7   to the left of   10
28    8  to the right of    7
29    8   to the left of   16
30    9           behind    0
31    9   to the left of   17
32    9   to the left of    0
33   10          next to    0
34   10  to the right of    6
35   10  to the right of   11
36   10  to the right of    7
37   10  to the right of    2
38   11   to the left of   10
39   13   to the left of   17
40   13   to the left of    6
41   13   to the left of    7
42   14   to the left of    1
43   15             near    5
44   16  to the right of    8
45   16  to the right of    3
46   16  to the right of    6
47   17   to the left of    3
48   17   to the left of    7
49   17   to the left of    6
50   17  to the right of   13
51   17  to the right of    9
52   18   to the left of    5
53   18   to the left of    0