What type of vehicle is to the left of the vehicle that is parked on the ground?
The vehicles are cars.
    src        edge_attr  dst
0     0        parked on    6
1     0   to the left of    5
2     0   to the left of    2
3     0  to the right of    1
4     0  to the right of    4
5     0   to the left of    3
6     1   to the left of    0
7     1   to the left of    3
8     1   to the left of    2
9     1   to the left of    5
10    1   to the left of    4
11    2  to the right of    1
12    2  to the right of    0
13    2  to the right of    4
14    2      in front of    5
15    3  to the right of    0
16    3  to the right of    4
17    3  to the right of    1
18    4   to the left of    3
19    4   to the left of    2
20    4  to the right of    1
21    4   to the left of    5
22    4   to the left of    0
23    5           behind    2
24    5  to the right of    0
25    5  to the right of    1
26    5  to the right of    4