What is the vegetable on the tree?
The vegetable is a lemon.
    src        edge_attr  dst
0     0  to the right of   12
1     0  to the right of    2
2     0               on   13
3     0   to the left of   16
4     1   to the left of   18
..  ...              ...  ...
72   22  to the right of   11
73   22   to the left of   19
74   23  to the right of    6
75   23  to the right of   12
76   24   to the left of   11

[77 rows x 3 columns]