Is it cloudless?
Yes, it is cloudless.
    src        edge_attr  dst
0     0  to the right of   15
1     0  to the right of    9
2     0               of   14
3     1               in    3
4     1        flying in    3
5     2   to the left of   11
6     2   to the left of    4
7     4  to the right of    2
8     4   to the left of   11
9     6  to the right of   13
10    6               of   14
11    8  to the right of   12
12    9   to the left of   17
13    9   to the left of   15
14    9  to the right of   10
15    9               of   14
16    9   to the left of    0
17   10   to the left of   18
18   10               in    3
19   10   to the left of    9
20   10   to the left of   14
21   11  to the right of    4
22   11               of   13
23   11  to the right of    2
24   12               of    1
25   12   to the left of    8
26   13   to the left of    6
27   14  to the right of   19
28   14  to the right of   10
29   14               in    3
30   15               of   14
31   15   to the left of   17
32   15               of   13
33   15  to the right of    9
34   15   to the left of    0
35   17               of   14
36   17  to the right of    9
37   17  to the right of   15
38   18  to the right of   10
39   19   to the left of   14