Does the sky look gray or orange?
The sky is gray.
   src        edge_attr  dst
0    0   to the left of    6
1    3  to the right of    7
2    5               on    2
3    6  to the right of   12
4    6  to the right of    0
5    7   to the left of    3
6   10               on    8
7   12   to the left of    6
8   14  shining through   13