Does the sky look cloudy?
Yes, the sky is cloudy.
    src        edge_attr  dst
0     1   to the left of   10
1     4  to the right of    7
2     4  to the right of    5
3     5   to the left of    4
4     6   to the left of   11
5     6   to the left of   12
6     7   to the left of    4
7    10               of   10
8    10  to the right of    1
9    11  to the right of    6
10   12  to the right of    6