What is in front of the trees that are not short?
The cars are in front of the trees.
     src        edge_attr  dst
0      0  to the right of   21
1      0  to the right of    8
2      0  to the right of    5
3      0      in front of    1
4      1           behind    0
..   ...              ...  ...
96    23  to the right of    9
97    25          wearing   19
98    25   to the left of    5
99    25   to the left of   15
100   25   to the left of   21

[101 rows x 3 columns]