What is the color of the grass?
The grass is green.
    src        edge_attr  dst
0     0  to the right of   19
1     0  to the right of    1
2     0  to the right of   18
3     0   to the left of    5
4     1  to the right of   21
..  ...              ...  ...
73   21   to the left of   18
74   21   to the left of   19
75   21   to the left of    3
76   21   to the left of    1
77   21   to the left of    6

[78 rows x 3 columns]