What vehicle is below the tree?
The vehicle is a car.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    1
2     0  to the right of   10
3     0  to the right of    9
4     1   to the left of   11
5     1   to the left of   10
6     1   to the left of    0
7     1   to the left of    9
8     1   to the left of    7
9     2   to the left of    3
10    2   to the left of    5
11    3  to the right of    2
12    4   to the left of    0
13    4   to the left of    5
14    5  to the right of    4
15    5  to the right of    2
16    6   to the left of   10
17    7  to the right of   10
18    7  to the right of    1
19    9            under   10
20    9  to the right of    1
21    9   to the left of    0
22    9            below   10
23   10  to the right of    6
24   10            above    9
25   10   to the left of    7
26   10  to the right of    1
27   10   to the left of    0
28   11  to the right of    1