Does the sky look blue and clear?
Yes, the sky is blue and clear.
    src        edge_attr  dst
0     0   to the left of    4
1     0  to the right of    5
2     0               on    8
3     0  to the right of   11
4     0  to the right of   10
5     3  to the right of   11
6     3               on    8
7     4  to the right of    0
8     4               on    8
9     5   to the left of    0
10    7      in front of    8
11    7           behind   12
12    8            below    6
13    8           behind    7
14   10               on    7
15   10               on   10
16   10   to the left of    0
17   10               on    9
18   11               on    8
19   11   to the left of    0
20   11   to the left of    3
21   12      in front of    7
22   13               on    7