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