Where is the grass?
The grass is on the airport.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    2
2     0  to the right of   18
3     0  to the right of    5
4     1  to the right of   18
..  ...              ...  ...
61   18  to the right of    4
62   18   to the left of   13
63   18  to the right of    5
64   18   to the left of    0
65   18   to the left of    1

[66 rows x 3 columns]