Does the sky have black color?
No, the sky is blue.
    src        edge_attr  dst
0     0   to the left of   10
1     1               on    3
2     1   to the left of   17
3     1  to the right of    2
4     2               on    3
5     2   to the left of   11
6     2   to the left of    1
7     4             near   14
8     4   to the left of   11
9     4          next to   14
10    5   to the left of   16
11    6  to the right of   13
12    7   to the left of   12
13    8  to the right of   14
14   10  to the right of    0
15   11      in front of   15
16   11               in   15
17   11  to the right of    4
18   11  to the right of    2
19   11   to the left of   17
20   11  to the right of   13
21   12  to the right of    7
22   12  to the right of   16
23   13   to the left of    6
24   13   to the left of   11
25   14      in front of   15
26   14   to the left of    8
27   14             near    4
28   14   to the left of   16
29   15           behind   14
30   15           behind   11
31   16  to the right of   14
32   16   to the left of   12
33   16  to the right of    5
34   17  to the right of   11
35   17  to the right of    1