What is the plane in?
The plane is in the air.
    src        edge_attr  dst
0     0  to the right of   16
1     0  to the right of    7
2     1  to the right of    2
3     2   to the left of    3
4     2   to the left of    1
5     3  to the right of    2
6     4   to the left of   15
7     5  to the right of    9
8     6            below   11
9     6   to the left of   14
10    7   to the left of    0
11    8  to the right of   14
12    8            below   11
13    9   to the left of    5
14    9   to the left of   12
15    9          holding   12
16    9               on   11
17   10   to the left of   11
18   11               in    0
19   11            above    8
20   11  to the right of   10
21   11   to the left of   15
22   12  to the right of    9
23   13   to the left of   14
24   14  to the right of    6
25   14   to the left of    8
26   14   to the left of   15
27   14  to the right of   13
28   15  to the right of    4
29   15  to the right of   11
30   15  to the right of   14
31   16   to the left of    0
32   17               on   11