What is the vegetable to the right of the sandwich that is sitting on the plate?
The vegetable is a tomato.
    src        edge_attr  dst
0     0               on    1
1     3   to the left of   15
2     4   to the left of   15
3     4   to the left of   12
4     5               on    6
5     7  to the right of    9
6     7  to the right of   14
7     8   to the left of   15
8     9   to the left of    7
9     9   to the left of   15
10   10   to the left of   12
11   11  to the right of   14
12   12  to the right of    4
13   12  to the right of   10
14   13   to the left of   15
15   14       sitting on    1
16   14   to the left of    7
17   14   to the left of   15
18   14   to the left of   11
19   15  to the right of   13
20   15  to the right of    3
21   15  to the right of    4
22   15  to the right of    8
23   15  to the right of    9
24   15  to the right of   14