Is there any black truck in this scene?
Yes, there is a black truck.
    src        edge_attr  dst
0     0   to the left of   11
1     1           inside    4
2     1               in    4
3     1           behind    2
4     1   to the left of    8
5     2               of    4
6     2   to the left of    8
7     3  to the right of   13
8     3   to the left of   11
9     3      in front of   12
10    3           behind    4
11    4      in front of    3
12    4  to the right of    7
13    4  to the right of   13
14    5   to the left of   11
15    6  to the right of   13
16    7   to the left of    4
17    8  to the right of    2
18    8      in front of    9
19    8  to the right of    1
20    9           behind    8
21    9               on   10
22   11  to the right of   13
23   11  to the right of    5
24   11               of    4
25   11  to the right of    0
26   11  to the right of    3
27   12           behind    3
28   13   to the left of    3
29   13   to the left of   11
30   13   to the left of    4
31   13   to the left of    6