What vegetables are to the left of the food on the right?
The vegetables are beans.
    src        edge_attr  dst
0     0               of    0
1     0   to the left of    3
2     1  to the right of    2
3     1  to the right of    9
4     2               of    4
5     2  to the right of    7
6     2   to the left of    6
7     2   to the left of    1
8     3   to the left of    6
9     3               of    4
10    3  to the right of    7
11    3  to the right of    0
12    4   to the left of   13
13    5   to the left of    6
14    6  to the right of    2
15    6  to the right of    5
16    6  to the right of   12
17    6  to the right of   11
18    6  to the right of    9
19    6  to the right of    8
20    6  to the right of    3
21    7   to the left of    2
22    7   to the left of    3
23    7   to the left of    8
24    8   to the left of    6
25    8  to the right of    7
26    9   to the left of    6
27    9   to the left of    1
28   10               on    9
29   10               on   10
30   11   to the left of    6
31   12   to the left of    6
32   13  to the right of    4