Does the sky look blue and open?
Yes, the sky is blue and open.
    src        edge_attr  dst
0     0           behind    3
1     0   to the left of    2
2     1   to the left of    5
3     2  to the right of    9
4     2  to the right of   11
5     2  to the right of    0
6     3  to the right of   11
7     3  to the right of   10
8     3  to the right of    4
9     3  to the right of    9
10    3      in front of    0
11    4   to the left of    3
12    5  to the right of    1
13    9   to the left of    2
14    9   to the left of    3
15   10   to the left of    3
16   11   to the left of    2
17   11   to the left of    3
18   11               in    8