The truck that is carrying a bike has what color?
The truck is black.
    src        edge_attr  dst
0     0  to the right of   13
1     0  to the right of    8
2     0  to the right of   11
3     1   to the left of   11
4     1   to the left of   13
5     1           behind    9
6     1   to the left of    8
7     3  to the right of   15
8     3  to the right of    9
9     3  to the right of   12
10    4   to the left of    7
11    4   on the back of    9
12    5   to the left of   16
13    6   to the left of   17
14    7  to the right of    4
15    8  to the right of   13
16    8   to the left of    0
17    8  to the right of    1
18    8  to the right of   14
19    9      in front of    1
20    9      in front of   14
21    9      in front of   13
22    9   to the left of   15
23    9   to the left of   17
24    9         carrying   14
25    9   to the left of    3
26   10   to the left of   16
27   11   to the left of   15
28   11  to the right of   14
29   11  to the right of   13
30   11   to the left of    0
31   11  to the right of    1
32   12   to the left of   15
33   12  to the right of   14
34   12   to the left of    3
35   13           behind    9
36   13   to the left of   11
37   13   to the left of    8
38   13  to the right of   14
39   13  to the right of    1
40   13   to the left of    0
41   14   to the left of    8
42   14   to the left of   11
43   14   to the left of   13
44   14   to the left of   12
45   15   to the left of    3
46   15  to the right of   12
47   15  to the right of    9
48   15  to the right of   11
49   16  to the right of   10
50   16  to the right of    5
51   16               on   14
52   17  to the right of    9
53   17  to the right of    6