Are there any black trucks or airplanes?
Yes, there is a black airplane.
    src        edge_attr  dst
0     0   to the left of    8
1     0   to the left of    7
2     0   to the left of    6
3     0   to the left of    4
4     1       sitting in    2
5     1           inside    3
6     1   to the left of    4
7     2   to the left of    4
8     3        flying in    5
9     4  to the right of    0
10    4  to the right of    1
11    4  to the right of    2
12    6   on the side of    4
13    6  to the right of    0
14    7  to the right of    9
15    7  to the right of    0
16    7           inside    4
17    8  to the right of    0
18    9   to the left of    7