Is the ground bare or covered?
The ground is covered.
    src        edge_attr  dst
0     0               on    5
1     0   to the left of    8
2     0  to the right of   12
3     0  to the right of   11
4     1   to the left of    6
..  ...              ...  ...
59   14  to the right of   11
60   15  to the right of   12
61   15  to the right of   13
62   15   to the left of    8
63   15  to the right of   11

[64 rows x 3 columns]