What color is the sky?
The sky is white.
    src        edge_attr  dst
0     0  to the right of    1
1     0   to the left of    6
2     1   to the left of    0
3     1   to the left of    2
4     1   to the left of    8
5     2  to the right of    1
6     2   to the left of   12
7     2  to the right of    3
8     3   to the left of    4
9     3   to the left of    2
10    3   to the left of    8
11    3   to the left of   12
12    4  to the right of    3
13    4   to the left of   12
14    6  to the right of    0
15    6  to the right of   10
16    8  to the right of    1
17    8  to the right of    3
18    8   to the left of   12
19    9               of    6
20   10   to the left of    6
21   12  to the right of    8
22   12  to the right of    3
23   12  to the right of    2
24   12  to the right of    4