Which color do you think the airplane's tail is?
The tail is blue.
    src        edge_attr  dst
0     1  to the right of    2
1     1   to the left of   14
2     1  to the right of   13
3     1   to the left of    4
4     1  to the right of    3
5     2   to the left of   14
6     2   to the left of    3
7     2   to the left of    4
8     2   to the left of   18
9     2   to the left of    1
10    3  to the right of   13
11    3   to the left of    4
12    3   to the left of   14
13    3   to the left of    1
14    3  to the right of    2
15    4   to the left of   14
16    4  to the right of    3
17    4  to the right of   13
18    4  to the right of    1
19    4  to the right of   18
20    4  to the right of    2
21    5   to the left of   19
22    5  to the right of   12
23    5   to the left of   10
24    7               in    8
25    8            above   15
26   10  to the right of   19
27   10  to the right of    5
28   10  to the right of   12
29   12   to the left of   19
30   12   to the left of   10
31   12   to the left of    5
32   13   to the left of    4
33   13   to the left of   14
34   13   to the left of    1
35   13   to the left of    3
36   14  to the right of   13
37   14  to the right of   18
38   14  to the right of    4
39   14  to the right of    2
40   14  to the right of    1
41   14  to the right of    3
42   15               on    0
43   15               on    9
44   15               at   11
45   18   to the left of   14
46   18  to the right of    2
47   18   to the left of    4
48   19  to the right of   12
49   19   to the left of   10
50   19  to the right of    5