Which type of food is not green, the cauliflower or the broccoli?
The cauliflower is not green.
    src        edge_attr  dst
0     0   to the left of    2
1     0               by    3
2     2  to the right of    3
3     2  to the right of    0
4     2   to the left of    7
5     2               on    1
6     2   to the left of    6
7     3   to the left of    2
8     4  to the right of    5
9     4  to the right of    9
10    5   to the left of    6
11    5   to the left of    4
12    5   to the left of    7
13    6  to the right of    5
14    6  to the right of    2
15    7  to the right of    9
16    7  to the right of    5
17    7  to the right of    2
18    9               on    1
19    9   to the left of    4
20    9   to the left of    7