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