Is the gray car to the left or to the right of the van?
The car is to the left of the van.
    src        edge_attr  dst
0     0   to the left of   13
1     0  to the right of    1
2     0   to the left of   12
3     1  to the right of    8
4     1  to the right of    2
5     1   to the left of    0
6     2   to the left of    8
7     2  to the right of    5
8     2   to the left of    1
9     3  to the right of   15
10    3   to the left of    7
11    3  to the right of   14
12    3  to the right of    4
13    4   to the left of   11
14    4   to the left of    3
15    4   to the left of   15
16    4           behind   15
17    4   to the left of    7
18    4   to the left of    6
19    5   to the left of    8
20    5   to the left of    2
21    6   to the left of   10
22    6   to the left of    7
23    6  to the right of    4
24    6  to the right of   15
25    7  to the right of    4
26    7  to the right of   15
27    7  to the right of    3
28    7  to the right of   14
29    7  to the right of    6
30    7               at    1
31    8  to the right of    2
32    8   to the left of    1
33    8  to the right of    5
34   10   to the left of   12
35   10  to the right of   11
36   10  to the right of    6
37   11  to the right of    4
38   11   to the left of   10
39   11  to the right of   15
40   12  to the right of   10
41   12   to the left of   13
42   12  to the right of    0
43   13  to the right of    0
44   13  to the right of   12
45   14   to the left of    7
46   14   to the left of   15
47   14   to the left of    3
48   15   to the left of    7
49   15   to the left of    6
50   15   to the left of   11
51   15  to the right of    4
52   15   to the left of    3
53   15  to the right of   14
54   15      in front of    4