What is the green vegetable?
The vegetable is a pepper.
    src        edge_attr  dst
0     0  to the right of    4
1     2             with    0
2     2             with    3
3     2             with    5
4     2               on    1
5     2  to the right of    4
6     2  to the right of    6
7     3  to the right of    6
8     3  to the right of    4
9     4   to the left of    0
10    4               on    1
11    4   to the left of    7
12    4   to the left of    3
13    4   to the left of    2
14    4   to the left of    5
15    5               on    2
16    5  to the right of    4
17    6   to the left of    3
18    6   to the left of    2
19    6   to the left of    7
20    7  to the right of    4
21    7  to the right of    6
22    7               on    2