Is the blue sky cloudless or cloudy?
The sky is cloudy.
    src        edge_attr  dst
0     0  to the right of    8
1     0   to the left of   13
2     1   to the left of    4
3     2  to the right of    3
4     3   to the left of    2
5     4  to the right of   11
6     4  to the right of    1
7     4  to the right of    9
8     4           beside    3
9     4  to the right of    6
10    6   to the left of    4
11    6  to the right of   12
12    7  to the right of   10
13    8   to the left of    0
14    9   to the left of    4
15   10   to the left of    7
16   11   to the left of    4
17   12   to the left of    6
18   13  to the right of    0