What color do you think is the plane in front of the airplane?
The plane is brown.
    src        edge_attr  dst
0     1               on    4
1     1      in front of    2
2     2           behind    1
3     2   to the left of    7
4     3   to the left of   12
5     3   to the left of   14
6     3  to the right of    7
7     5           beside    4
8     6   to the left of   16
9     6   to the left of   14
10    6   to the left of   12
11    7               of    1
12    7   to the left of    3
13    7   to the left of   11
14    7  to the right of    2
15    8               of    1
16    9               in    0
17    9  to the right of   10
18   10               in    0
19   10   to the left of    9
20   10   to the left of   13
21   11  to the right of    7
22   12  to the right of   13
23   12   to the left of   16
24   12  to the right of    6
25   12  to the right of    3
26   12   to the left of   14
27   13   to the left of   12
28   13   to the left of   14
29   13  to the right of   10
30   13   to the left of   16
31   14  to the right of   13
32   14               of    1
33   14  to the right of   16
34   14  to the right of    3
35   14  to the right of    6
36   14  to the right of   12
37   15               of    1
38   16  to the right of    6
39   16  to the right of   12
40   16   to the left of   14
41   16  to the right of   13
42   16               of    1