Is there any black truck or airplane?
Yes, there is a black airplane.
    src        edge_attr  dst
0     0   to the left of   20
1     0   to the left of    2
2     0   to the left of    1
3     0   to the left of   15
4     0  to the right of    3
5     1  to the right of    0
6     1  to the right of    3
7     1   to the left of    2
8     1   to the left of   20
9     1   to the left of   15
10    2  to the right of    1
11    2  to the right of    0
12    2  to the right of   20
13    2  to the right of   15
14    3   to the left of    1
15    3   to the left of    0
16    3   to the left of   20
17    3   to the left of   15
18   10           inside   16
19   11               on    9
20   13   to the left of   15
21   13   to the left of   20
22   15  to the right of    0
23   15  to the right of    1
24   15   to the left of    2
25   15  to the right of    3
26   15  to the right of   13
27   15  to the right of   20
28   20  to the right of    0
29   20  to the right of   13
30   20  to the right of    3
31   20   to the left of    2
32   20  to the right of    1
33   20   to the left of   15