What type is the vehicle?
The vehicle is a train.
    src        edge_attr  dst
0     0  to the right of    8
1     0   to the left of    2
2     0  to the right of    9
3     0  to the right of    5
4     1  to the right of   11
5     1  to the right of    5
6     1  to the right of    8
7     1  to the right of    9
8     2  to the right of    9
9     2  to the right of    5
10    2  to the right of    0
11    3  to the right of    7
12    3   to the left of    8
13    3  to the right of    6
14    4   to the left of    7
15    5  on the front of    9
16    5  to the right of    8
17    5   to the left of    1
18    5   to the left of    0
19    5   to the left of    2
20    6   to the left of    8
21    6   to the left of    3
22    7   to the left of    3
23    7  to the right of    4
24    7   to the left of    8
25    8  to the right of    6
26    8   to the left of    0
27    8  to the right of    7
28    8   to the left of    1
29    8   to the left of    5
30    8  to the right of    3
31    9   to the left of    1
32    9   to the left of    2
33    9   to the left of    0
34   10  to the right of   11
35   11   to the left of   10
36   11   to the left of    1