What vehicle is in the airport?
The vehicle is a truck.
    src        edge_attr  dst
0     0  to the right of   17
1     0   to the left of    5
2     0   to the left of   16
3     0  to the right of   14
4     0  to the right of   18
5     0  to the right of    4
6     2  to the right of    9
7     2               of    5
8     3   to the left of    6
9     4  to the right of   18
10    4  to the right of   12
11    4   to the left of    0
12    4   to the left of   10
13    4  to the right of   17
14    4   to the left of    9
15    5  to the right of    9
16    5  to the right of   10
17    5  to the right of    0
18    6  to the right of    3
19    9  to the right of    4
20    9  to the right of   14
21    9   to the left of    5
22    9   to the left of   16
23    9   to the left of    2
24   10  to the right of   14
25   10   to the left of   16
26   10  to the right of   17
27   10  to the right of   18
28   10   to the left of    5
29   10  to the right of    4
30   12   to the left of   17
31   12   to the left of   18
32   12   to the left of    4
33   13               in   19
34   14   to the left of    9
35   14   to the left of   10
36   14   to the left of    0
37   16  to the right of    0
38   16  to the right of   10
39   16  to the right of    9
40   17   to the left of    4
41   17  to the right of   12
42   17   to the left of   10
43   17   to the left of    0
44   18  to the right of   12
45   18   to the left of    0
46   18   to the left of    4
47   18   to the left of   10