What is the vegetable to the left of the red vegetable?
The vegetable is lettuce.
    src        edge_attr  dst
0     0   to the left of   11
1     0               on    3
2     0             with   14
3     0   to the left of    7
4     0   to the left of    4
..  ...              ...  ...
59   17   to the left of    5
60   17   to the left of    2
61   19               on   20
62   20  to the right of   15
63   20  to the right of   10

[64 rows x 3 columns]