What kind of vegetable is to the left of the spinach?
The vegetable is a tomato.
    src        edge_attr  dst
0     0   to the left of   17
1     0   to the left of   11
2     0  to the right of    5
3     0   to the left of   16
4     1   to the left of   12
..  ...              ...  ...
86   21   to the left of   16
87   21   to the left of   11
88   21   to the left of    3
89   22   to the left of    1
90   22   to the left of   12

[91 rows x 3 columns]