What is in the sky?
The clouds are in the sky.
    src        edge_attr  dst
0     0   to the left of    4
1     1   to the left of   15
2     2  to the right of    9
3     2  to the right of   10
4     2  to the right of    7
5     2  to the right of    4
6     2   to the left of   13
7     3               on   15
8     4   to the left of    6
9     4  to the right of    5
10    4   to the left of   13
11    4  to the right of   14
12    4   to the left of   12
13    4             with    9
14    4   to the left of    2
15    4  to the right of   11
16    4          holding    1
17    4  to the right of    0
18    4   to the left of   15
19    5   to the left of   14
20    5   to the left of    4
21    6  to the right of    4
22    7   to the left of    2
23    7               in    8
24    8   to the left of   13
25    9   to the left of   13
26    9   to the left of    2
27   10               of    4
28   10   to the left of    2
29   10   to the left of   13
30   11               on   13
31   11   to the left of    4
32   12  to the right of    4
33   13  to the right of   10
34   13  to the right of    4
35   13  to the right of    2
36   13  to the right of    9
37   13  to the right of    8
38   14  to the right of    5
39   14   to the left of    4
40   15  to the right of    4
41   15  to the right of    1