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