What is the vehicle to the right of the blue vehicle?
The vehicle is a train.
    src        edge_attr  dst
0     0   to the left of   12
1     0   to the left of    4
2     1   to the left of    9
3     1   to the left of    4
4     1  to the right of    7
5     2   to the left of    4
6     2   to the left of   12
7     4  to the right of    9
8     4  to the right of    0
9     4  to the right of    1
10    4  to the right of    2
11    4               on   12
12    5   to the left of    8
13    5   to the left of   13
14    5   to the left of    6
15    6   to the left of   13
16    6   to the left of    8
17    6  to the right of    5
18    7               on    0
19    7   to the left of    1
20    8   to the left of   12
21    8   to the left of   11
22    8  to the right of    6
23    8  to the right of    5
24    9               on    0
25    9   to the left of    4
26    9  to the right of    1
27    9   to the left of   12
28   10   to the left of   11
29   11  to the right of   10
30   11  to the right of   13
31   11  to the right of    8
32   12  to the right of    9
33   12  to the right of    8
34   12  to the right of    0
35   12  to the right of    2
36   12  to the right of   13
37   12  to the right of   14
38   13   to the left of   12
39   13  to the right of    5
40   13   to the left of   11
41   13  to the right of    6
42   14   to the left of   12