What is the vegetable to the right of the cake?
The vegetable is a carrot.
    src        edge_attr  dst
0     0  to the right of    3
1     1   to the left of    2
2     2  to the right of    1
3     3   to the left of    0
4     5  to the right of    6
5     6   to the left of    5
6     6   to the left of   10
7     6   to the left of    8
8     6  to the right of   11
9     8  to the right of    6
10   10  to the right of    6
11   11   to the left of    6
12   12               on    9