What color is the sky?
The sky is white.
    src        edge_attr  dst
0     0  to the right of    8
1     1               on    4
2     1             near    4
3     1   to the left of    7
4     1  to the right of    6
5     3               on    2
6     3             near    4
7     3               on    4
8     4             near    8
9     4             near    3
10    4             near    1
11    6               on    4
12    6   to the left of    1
13    7  to the right of    1
14    8             near    4
15    8   to the left of    0