Is it a beach?
Yes, it is a beach.
     src        edge_attr  dst
0      0   to the left of    8
1      0   to the left of    1
2      0   to the left of   20
3      0   to the left of   10
4      1  to the right of    0
..   ...              ...  ...
125   29  to the right of    1
126   29  to the right of    8
127   29  to the right of   10
128   29  to the right of   21
129   29  to the right of   23

[130 rows x 3 columns]