What is the vehicle that the trees that are not short are growing behind of?
The vehicle is a car.
    src        edge_attr  dst
0     0               of    5
1     0   to the left of    1
2     1  to the right of    6
3     1  to the right of    9
4     1  to the right of    0
5     1  to the right of   16
6     2  to the right of    5
7     2   to the left of   14
8     3               on    5
9     3  to the right of    5
10    4  to the right of    5
11    4   to the left of   14
12    5   to the left of    4
13    5   to the left of    3
14    5   to the left of   15
15    5   to the left of    7
16    5   to the left of    2
17    5   to the left of   14
18    6   to the left of   13
19    6   to the left of    1
20    6   to the left of    9
21    7  to the right of    5
22    8          driving    5
23    9   to the left of    1
24    9  to the right of    6
25   10   growing behind    5
26   13  to the right of    6
27   14  to the right of    4
28   14  to the right of    5
29   14  to the right of    2
30   15  to the right of    5
31   16   to the left of    1