Where are the trees?
The trees are on the hill.
    src        edge_attr  dst
0     1   to the left of   20
1     1  to the right of    6
2     2   to the left of   12
3     2   to the left of   13
4     2   to the left of   23
..  ...              ...  ...
85   28      standing in   21
86   28  to the right of   23
87   28  to the right of   27
88   28  to the right of   12
89   28  to the right of   13

[90 rows x 3 columns]