Is this a truck or a train?
This is a train.
    src        edge_attr  dst
0     0  to the right of   15
1     0   to the left of    6
2     0  to the right of   13
3     1  to the right of    3
4     1             near    5
5     2  to the right of   18
6     2             near    3
7     3             near    5
8     3             near   10
9     3   to the left of    1
10    3   to the left of   16
11    3             near    2
12    5             near    1
13    5             near    3
14    5             near   16
15    6  to the right of   14
16    6  to the right of   12
17    6  to the right of    0
18    6  to the right of   13
19    6  to the right of    9
20    6  to the right of    8
21    7        on top of    6
22    8   to the left of    6
23    8  to the right of   10
24    8   to the left of    9
25    9   to the left of    6
26    9  to the right of   10
27    9  to the right of    8
28   10   to the left of    9
29   10   to the left of    8
30   10             near    3
31   11  to the right of   13
32   11  to the right of   12
33   12   to the left of    6
34   12   to the left of   11
35   12  to the right of   13
36   12  to the right of   15
37   12        on top of    0
38   13   to the left of   12
39   13   to the left of    6
40   13   to the left of   11
41   13   to the left of   14
42   13   to the left of    0
43   14  to the right of   13
44   14   to the left of    6
45   14           beside    0
46   15   to the left of   12
47   15   to the left of    0
48   16  to the right of    3
49   16             near    5
50   17  to the right of   18
51   18   to the left of    2
52   18   to the left of   17