Does the sky appear to be blue or white?
The sky is blue.
    src        edge_attr  dst
0     0               on    1
1     1  to the right of    8
2     1  to the right of    3
3     1  to the right of    9
4     3      in front of    5
5     3  to the right of    6
6     3   to the left of    9
7     3   to the left of    4
8     3   to the left of    1
9     4  to the right of    3
10    5  to the right of    6
11    5           behind    3
12    6   to the left of    3
13    6   to the left of    5
14    8   to the left of    1
15    9   to the left of    1
16    9  to the right of    3