What is the grass on?
The grass is on the trees.
    src        edge_attr  dst
0     0               on    1
1     2             near   16
2     2          next to   16
3     2  to the right of   18
4     2  to the right of   20
..  ...              ...  ...
66   18  to the right of    7
67   18  to the right of    3
68   20               on    4
69   20   to the left of   14
70   20   to the left of    2

[71 rows x 3 columns]