Is the sky cloudless and blue?
Yes, the sky is cloudless and blue.
    src        edge_attr  dst
0     1  to the right of    7
1     3   to the left of    6
2     3  to the right of    7
3     4  to the right of    7
4     5  to the right of    7
5     6  to the right of    8
6     6  to the right of    3
7     7   to the left of    3
8     7   to the left of    1
9     7   to the left of    5
10    7   to the left of    4
11    7   to the left of    8
12    8  to the right of    7
13    8   to the left of    6