What is the vegetable to the right of the orange on the left?
The vegetable is a lemon.
    src        edge_attr  dst
0     1  to the right of    9
1     2   to the left of    3
2     2   to the left of    8
3     3   to the left of    8
4     3  to the right of    2
5     6  to the right of    9
6     7   to the left of    9
7     8  to the right of   10
8     8  to the right of    3
9     8  to the right of    2
10    9   to the left of    1
11    9  to the right of    7
12    9   to the left of    6
13   10  to the right of   13
14   10   to the left of    8
15   13   to the left of   10