How long are the pines?
The pines are long.
    src        edge_attr  dst
0     0  to the right of   13
1     0   to the left of    9
2     0   to the left of   20
3     0   to the left of   18
4     0  to the right of    2
..  ...              ...  ...
87   22  to the right of   13
88   22   to the left of    4
89   22   to the left of   20
90   23        on top of   19
91   23  to the right of   12

[92 rows x 3 columns]