What color is the cloudy sky?
The sky is dark.
    src        edge_attr  dst
0     0   to the left of   10
1     1   to the left of    2
2     2  to the right of    9
3     2  to the right of   12
4     2  to the right of    1
5     2  to the right of   14
6     2  to the right of    6
7     3               by    5
8     3          next to    5
9     3             near    5
10    3  to the right of   14
11    3  to the right of    6
12    3  to the right of   12
13    5             near    3
14    6   to the left of    3
15    6   to the left of    2
16    9   to the left of    2
17    9  to the right of   11
18   10  to the right of   11
19   10   to the left of   12
20   10  to the right of    0
21   11   to the left of   10
22   11   to the left of    9
23   12   to the left of    3
24   12  to the right of   10
25   12               on    5
26   12   to the left of    2
27   14   to the left of    3
28   14   to the left of    2