Is the sky cloudy?
No, the sky is clear.
    src        edge_attr  dst
0     0   to the left of    2
1     1   to the left of    3
2     1  to the right of    8
3     1   to the left of    6
4     1  to the right of    7
5     1   to the left of    5
6     1   to the left of    4
7     2  to the right of    0
8     3  to the right of    1
9     4  to the right of    1
10    4   to the left of    6
11    4  to the right of    8
12    5  to the right of    8
13    5  to the right of    1
14    6  to the right of    1
15    6  to the right of    4
16    7   to the left of    1
17    8   to the left of    4
18    8   to the left of    5
19    8   to the left of    1