What vegetables are not ripe?
The vegetables are lemons.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of    2
2     0  to the right of   34
3     1   to the left of   38
4     2  to the right of   34
..  ...              ...  ...
75   36  to the right of   25
76   37   to the left of   10
77   38  to the right of    1
78   39  to the right of    5
79   40  to the right of    5

[80 rows x 3 columns]