Are the trees short and green?
No, the trees are green but tall.
     src        edge_attr  dst
0      0  to the right of   25
1      0   to the left of    3
2      0   to the left of    1
3      0  to the right of   22
4      0  to the right of   19
..   ...              ...  ...
164   26   to the left of    3
165   26   to the left of   10
166   26  to the right of   25
167   27   to the left of    3
168   27  to the right of   25

[169 rows x 3 columns]