What is the color of the cloudy sky?
The sky is gray.
    src        edge_attr  dst
0     0  to the right of   14
1     0  to the right of   18
2     0  to the right of   16
3     1  to the right of    6
4     2  to the right of   14
..  ...              ...  ...
71   18  to the right of    6
72   18   to the left of    4
73   18   to the left of    3
74   18   to the left of   12
75   18   to the left of    0

[76 rows x 3 columns]