Are there any airplanes?
Yes, there is an airplane.
    src        edge_attr  dst
0     0               of    2
1     0  to the right of    3
2     0  to the right of    4
3     1  to the right of    3
4     2               in    0
5     2      in front of    5
6     3   to the left of    1
7     3   to the left of    0
8     3               on    0
9     3   to the left of    7
10    3               on    7
11    4  to the right of    6
12    4  to the right of    9
13    4   to the left of    0
14    5           behind    2
15    6               in    3
16    6   to the left of    4
17    6  to the right of    8
18    7               on    0
19    7  to the right of    3
20    8   to the left of    9
21    8   to the left of    6
22    9  to the right of    8
23    9   to the left of    4