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