Who is in front of the trees?
The crowd is in front of the trees.
     src        edge_attr  dst
0      0   to the left of   10
1      0   to the left of    9
2      0   to the left of   23
3      0   to the left of   12
4      1   to the left of   15
..   ...              ...  ...
114   27  to the right of   24
115   27   to the left of   25
116   28  to the right of    9
117   28  to the right of   10
118   28  to the right of   23

[119 rows x 3 columns]