Are there either trains or vans that are red?
Yes, the train is red.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of    8
2     0   to the left of   10
3     1  to the right of   17
4     1   to the left of   11
5     2  to the right of    4
6     2  to the right of   12
7     2  to the right of   19
8     2  to the right of   15
9     3  to the right of   10
10    3  to the right of    8
11    4   to the left of   19
12    4   to the left of   12
13    4   to the left of    2
14    4   to the left of   15
15    4   to the left of    5
16    4   to the left of   11
17    5  to the right of    4
18    5  to the right of   12
19    5  to the right of   15
20    6  to the right of   10
21    6  to the right of    8
22    7   to the left of   11
23    7  to the right of   17
24    8   to the left of    6
25    8   to the left of    3
26    8  to the right of    0
27   10  to the right of    0
28   10   to the left of    6
29   10        on top of   18
30   10   to the left of    3
31   11  to the right of    0
32   11  to the right of   20
33   11  to the right of   12
34   11  to the right of    4
35   11  to the right of   19
36   11  to the right of    7
37   11  to the right of    1
38   12   to the left of    2
39   12   to the left of   11
40   12  to the right of    4
41   12   to the left of    5
42   15  to the right of    4
43   15   to the left of    2
44   15   to the left of    5
45   16             near   18
46   16   to the left of   18
47   17   to the left of   20
48   17   to the left of    7
49   17   to the left of    1
50   18  to the right of   16
51   18             near   16
52   19   to the left of   11
53   19        on top of   18
54   19   to the left of    2
55   19  to the right of    4
56   20  to the right of   17
57   20   to the left of   11