Do you see any lemons?
Yes, there is a lemon.
    src        edge_attr  dst
0     0               of    1
1     0               on   12
2     0   to the left of   16
3     0   to the left of    2
4     0   to the left of   19
..  ...              ...  ...
66   19   to the left of    6
67   20  to the right of    8
68   20  to the right of   10
69   20  to the right of   13
70   21  to the right of   10

[71 rows x 3 columns]