Which color does the vehicle which is to the left of the train have?
The car has brown color.
    src        edge_attr  dst
0     0  to the right of    8
1     0  to the right of    2
2     0  to the right of   11
3     0  to the right of   10
4     0  to the right of    6
5     1  to the right of   12
6     2   to the left of   12
7     2   to the left of    0
8     3  to the right of   12
9     4  to the right of   12
10    5  to the right of    9
11    6   to the left of    0
12    6   to the left of   11
13    6   to the left of   12
14    7  to the right of    8
15    8   to the left of    0
16    8   to the left of    7
17    8  to the right of    9
18    9   to the left of   12
19    9   to the left of    5
20    9   to the left of    8
21    9   to the left of   11
22   10   to the left of   12
23   10   to the left of    0
24   11   to the left of    0
25   11  to the right of    6
26   11  to the right of    9
27   12  to the right of   13
28   12  to the right of    2
29   12               at    0
30   12  to the right of   10
31   12   to the left of    4
32   12   to the left of    1
33   12   to the left of   14
34   12  to the right of    6
35   12   to the left of    3
36   12  to the right of    9
37   13   to the left of   12
38   14  to the right of   12