What color does the large van have?
The van has silver color.
    src        edge_attr  dst
0     0  to the right of   10
1     0   to the left of    3
2     0  to the right of   18
3     0   to the left of   11
4     1               on   17
5     1   to the left of    3
6     1   to the left of    4
7     2  to the right of   10
8     2  to the right of   11
9     3  to the right of    6
10    3  to the right of    0
11    3   to the left of    8
12    3  to the right of   12
13    3  to the right of   11
14    3  to the right of   16
15    3  to the right of   14
16    3   to the left of   13
17    3  to the right of   10
18    3  to the right of    7
19    3  to the right of    1
20    4  to the right of    1
21    5   to the left of   11
22    5   to the left of   14
23    6   to the left of    3
24    6               in   17
25    7   to the left of   11
26    7   to the left of    3
27    7               on   17
28    7  to the right of   18
29    8  to the right of    3
30    9               on    4
31   10   to the left of    3
32   10   to the left of    0
33   10   to the left of    2
34   10   to the left of   12
35   10   to the left of   11
36   10  to the right of   18
37   11  to the right of    7
38   11  to the right of    0
39   11  to the right of    5
40   11  to the right of   18
41   11   to the left of    2
42   11   to the left of   12
43   11  to the right of   14
44   11  to the right of   10
45   11   to the left of    3
46   12  to the right of   10
47   12   to the left of    3
48   12  to the right of   11
49   13  to the right of    3
50   14               on   17
51   14   to the left of    3
52   14   to the left of   11
53   14  to the right of    5
54   16               in   17
55   16   to the left of    3
56   18   to the left of    7
57   18   to the left of   11
58   18   to the left of   10
59   18   to the left of    0