What is the vehicle that is to the left of the person that is waiting?
The vehicle is a car.
    src        edge_attr  dst
0     0               by    1
1     0   to the left of    5
2     0  to the right of    1
3     0   to the left of    6
4     1   to the left of    5
5     1  to the right of    3
6     1   to the left of    6
7     1   to the left of    0
8     2   to the left of    8
9     2  to the right of   15
10    3   to the left of    6
11    3   to the left of    1
12    4  to the right of    6
13    4   to the left of   16
14    5  to the right of    0
15    5  to the right of    1
16    6   to the left of   16
17    6               in    7
18    6  to the right of    0
19    6  to the right of    3
20    6  to the right of    1
21    6   to the left of    8
22    6   to the left of    4
23    8  to the right of    2
24    8  to the right of    6
25    8  to the right of    9
26    8  to the right of   10
27    8  to the right of   11
28    8  to the right of   12
29    8  to the right of   14
30    9   to the left of    8
31   10  to the right of   15
32   10   to the left of    8
33   11  to the right of   15
34   11   to the left of    8
35   12  to the right of   15
36   12   to the left of    8
37   14  to the right of   15
38   14   to the left of    8
39   15   to the left of   12
40   15   to the left of   14
41   15   to the left of    2
42   15   to the left of   11
43   15   to the left of   10
44   16  to the right of    4
45   16  to the right of    6