What are the leaves growing on?
The leaves are growing on the palms.
     src        edge_attr  dst
0      0  to the right of   31
1      0  to the right of   18
2      0  to the right of    7
3      0  to the right of   22
4      0  to the right of   19
..   ...              ...  ...
171   31   to the left of    9
172   31   to the left of    0
173   31   to the left of    2
174   31  to the right of   20
175   31   to the left of   14

[176 rows x 3 columns]