Are the crumbs made of wood?
Yes, the crumbs are made of wood.
     src        edge_attr  dst
0      0  to the right of   31
1      0  to the right of   25
2      0   to the left of   33
3      0  to the right of    7
4      0  to the right of    2
..   ...              ...  ...
121   33  to the right of    7
122   33  to the right of   14
123   33  to the right of    0
124   33  to the right of   25
125   33  to the right of   17

[126 rows x 3 columns]