Is there a white train or truck?
No, there is a train but it is black.
    src        edge_attr  dst
0     1               on    0
1     1   to the left of    2
2     2  to the right of    1
3     2               on    0
4     3               on    0
5     7  to the right of   14
6     7  to the right of   12
7     7  to the right of   15
8     8   to the left of   11
9     8            above    9
10    9  to the right of   15
11    9  to the right of   14
12    9            below    8
13    9  to the right of   12
14    9  to the right of   10
15    9  to the right of   17
16    9   to the left of   11
17    9  to the right of   13
18   10   to the left of    9
19   11  to the right of   16
20   11  to the right of    9
21   11  to the right of    8
22   12   to the left of    7
23   12  to the right of   14
24   12  to the right of   15
25   12   to the left of    9
26   12   to the left of   17
27   12   to the left of   13
28   13   to the left of    9
29   13  to the right of   14
30   13   to the left of   17
31   13  to the right of   12
32   13  to the right of   15
33   14   to the left of   15
34   14   to the left of    7
35   14   to the left of    9
36   14   to the left of   13
37   14   to the left of   12
38   14   to the left of   17
39   15   to the left of   12
40   15   to the left of    7
41   15   to the left of   13
42   15   to the left of   17
43   15  to the right of   14
44   15   to the left of    9
45   16   to the left of   11
46   17  to the right of   12
47   17  to the right of   13
48   17  to the right of   15
49   17  to the right of   14
50   17   to the left of    9