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