What color is the sky?
The sky is gray.
     src        edge_attr  dst
0      0   to the left of   17
1      0  to the right of   19
2      0  to the right of   18
3      0  to the right of    3
4      0  to the right of    1
..   ...              ...  ...
141   22   to the left of   19
142   22   to the left of   20
143   23   to the left of   20
144   23  to the right of   16
145   23   to the left of    3

[146 rows x 3 columns]