Which kind of aircraft is parked at the airport?
The aircraft is an airplane.
    src        edge_attr  dst
0     0        parked at    8
1     1  to the right of   23
2     1  to the right of   24
3     1   to the left of   19
4     1  to the right of   20
5     2        parked at    8
6     4        parked at    8
7     5        parked at    8
8     5  to the right of   21
9     6        parked at    8
10    6   to the left of    7
11    7        parked at    8
12    7  to the right of    6
13    9   to the left of   14
14    9        parked in   12
15   10        parked at    8
16   12   to the left of   14
17   13   to the left of   14
18   14  to the right of    9
19   14  to the right of   13
20   14  to the right of   12
21   15   to the left of   18
22   15   to the left of   17
23   15  to the right of   16
24   16   to the left of   15
25   17  to the right of   15
26   18  to the right of   15
27   19  to the right of    1
28   20   to the left of    1
29   21   to the left of    5
30   23   to the left of    1
31   24   to the left of    1
32   24       driving on   23