Is the hay full or empty?
The hay is full.
    src        edge_attr  dst
0     0  to the right of    2
1     0  to the right of    1
2     0   to the left of   21
3     0   to the left of   10
4     0               of    8
..  ...              ...  ...
72   21  to the right of    2
73   21               of    8
74   21  to the right of    0
75   21  to the right of    1
76   21   to the left of   10

[77 rows x 3 columns]