What is the color of the clouds?
The clouds are gray.
     src        edge_attr  dst
0      0  to the right of   16
1      0  to the right of   12
2      0   to the left of   20
3      0   to the left of   18
4      0   to the left of    6
..   ...              ...  ...
194   24   to the left of   12
195   24   to the left of    2
196   24   to the left of   15
197   25  to the right of    3
198   25   to the left of   13

[199 rows x 3 columns]