What is the sky full of?
The sky is full of clouds.
    src        edge_attr  dst
0     0               of    2
1     0   to the left of   31
2     0   to the left of    4
3     0   to the left of    7
4     1  to the right of   12
..  ...              ...  ...
85   30   to the left of   13
86   30  to the right of   10
87   31  to the right of    0
88   31   to the left of    4
89   31   to the left of    7

[90 rows x 3 columns]