What is in front of the post that is standing on the road?
The trees are in front of the post.
     src        edge_attr  dst
0      0  to the right of    3
1      0   to the left of   21
2      0  to the right of   16
3      1  to the right of   26
4      1        parked on    7
..   ...              ...  ...
178   26        parked on    7
179   26   to the left of    6
180   28  to the right of   23
181   28  to the right of    4
182   28  to the right of   19

[183 rows x 3 columns]