Is the sky clear and blue?
No, the sky is clear but white.
    src        edge_attr  dst
0     0   to the left of    2
1     0   to the left of    4
2     2               on    5
3     2  to the right of    9
4     2   to the left of    4
5     2  to the right of    0
6     3   to the left of    6
7     3   to the left of    7
8     3   to the left of    4
9     4  to the right of    6
10    4  to the right of    5
11    4  to the right of    7
12    4  to the right of    8
13    4  to the right of    9
14    4  to the right of    0
15    4  to the right of    3
16    4  to the right of    2
17    5   to the left of    4
18    6   to the left of    4
19    6  to the right of    9
20    6  to the right of    3
21    7  to the right of    3
22    7   to the left of    4
23    8   to the left of    4
24    9   to the left of    6
25    9   to the left of    2
26    9   to the left of    4