What is in front of the trees?
The train is in front of the trees.
     src        edge_attr  dst
0      0  to the right of   22
1      0   to the left of   24
2      0  to the right of    4
3      0  to the right of    2
4      0   to the left of   15
..   ...              ...  ...
156   24  to the right of    0
157   24  to the right of    4
158   24           behind    5
159   24  to the right of    2
160   24  to the right of    1

[161 rows x 3 columns]