What is in front of the wire?
The tree is in front of the wire.
     src        edge_attr  dst
0      0  to the right of   12
1      0   to the left of   18
2      0  to the right of    7
3      0  to the right of    4
4      0  to the right of    9
..   ...              ...  ...
110   23   to the left of   19
111   23   to the left of    7
112   23   to the left of    9
113   23   to the left of    4
114   23   to the left of   22

[115 rows x 3 columns]