What is the vegetable to the right of the meat that looks brown?
The vegetable is a celery.
    src        edge_attr  dst
0     0   to the left of   15
1     0   to the left of   19
2     0  to the right of    6
3     0  to the right of    1
4     1   to the left of    0
5     1               on   10
6     1   to the left of    4
7     1   to the left of    3
8     1   to the left of    7
9     1   to the left of    5
10    2   to the left of    8
11    2  to the right of    6
12    3  to the right of    1
13    3  to the right of    6
14    3   to the left of    8
15    3   to the left of   15
16    4   to the left of   15
17    4               on   13
18    4  to the right of    1
19    4   to the left of    8
20    4  to the right of    6
21    5   to the left of   15
22    5  to the right of    1
23    5  to the right of   12
24    6   to the left of    3
25    6   to the left of    2
26    6   to the left of    0
27    6   to the left of    4
28    6               on   13
29    7   to the left of   15
30    7  to the right of    1
31    8  to the right of   14
32    8  to the right of    4
33    8  to the right of    3
34    8  to the right of    2
35    9   to the left of   18
36   11               on   10
37   11   to the left of   18
38   12   to the left of   19
39   12   to the left of    5
40   13               on   10
41   14               on   13
42   14   to the left of    8
43   15  to the right of    7
44   15  to the right of    4
45   15  to the right of    0
46   15  to the right of    3
47   15  to the right of    5
48   16               on   11
49   17               on   11
50   17   to the left of   18
51   18  to the right of   11
52   18  to the right of    9
53   18               on   10
54   18  to the right of   17
55   19  to the right of   12
56   19  to the right of    0