Which place is it?
It is a forest.
     src        edge_attr  dst
0      0   to the left of    6
1      0   to the left of   21
2      2   to the left of   10
3      2  to the right of   24
4      4  to the right of    5
..   ...              ...  ...
115   25   to the left of   18
116   25   to the left of    4
117   25   to the left of   15
118   25   to the left of    5
119   25   to the left of   11

[120 rows x 3 columns]