What vegetable is to the left of the lettuce in the top?
The vegetable is broccoli.
    src        edge_attr  dst
0     0   to the left of    4
1     2   to the left of   10
2     4               on    5
3     4  to the right of    0
4     6   to the left of   11
5     7  to the right of    9
6     8  to the right of    9
7     9               in    6
8     9   to the left of    7
9     9   to the left of    8
10    9   to the left of   11
11   10  to the right of    2
12   11  to the right of    6
13   11  to the right of    9