Do the tractor and the truck have the same color?
No, the truck is red and the tractor is green.
    src        edge_attr  dst
0     0  to the right of   16
1     1   to the left of    5
2     1               in   18
3     1  to the right of   15
4     1  to the right of   11
5     2               on   17
6     2   to the left of    3
7     2  to the right of    9
8     2  to the right of    4
9     3  to the right of   17
10    3  to the right of   16
11    3  to the right of    2
12    3  to the right of   13
13    3  to the right of   12
14    4   to the left of   12
15    4   to the left of    2
16    4   to the left of   16
17    4   to the left of   13
18    4   to the left of   17
19    5  to the right of    1
20    7   to the left of   11
21    7   to the left of    8
22    8  to the right of    7
23    8   to the left of   11
24    9   to the left of    2
25    9   to the left of   12
26    9   to the left of   13
27    9   to the left of   16
28    9   to the left of   17
29   11  to the right of    7
30   11  to the right of    8
31   11        pulled by   19
32   11  to the right of   19
33   11   to the left of   15
34   11   to the left of    1
35   12  to the right of    4
36   12               on   13
37   12   to the left of    3
38   12  to the right of    9
39   13  to the right of    9
40   13  to the right of    4
41   13   to the left of    3
42   14               in   10
43   14               on   10
44   15  to the right of   11
45   15   to the left of    1
46   16  to the right of    4
47   16  to the right of    9
48   16   to the left of    0
49   16   to the left of    3
50   17               of   16
51   17  to the right of    9
52   17   to the left of    3
53   17  to the right of    4
54   19   to the left of   11
55   19          pulling   11