Which kind of food is not brown?
The food is a fruit.
    src        edge_attr  dst
0     0   to the left of   17
1     2  to the right of    9
2     2   to the left of    3
3     2  to the right of    8
4     2   to the left of   12
5     3  to the right of   13
6     3  to the right of    2
7     3  to the right of    7
8     4               on   15
9     4  to the right of    8
10    4   to the left of   14
11    4  to the right of    5
12    5   to the left of    4
13    5   to the left of   14
14    5   to the left of   13
15    5  to the right of    8
16    7   to the left of   10
17    7   to the left of    3
18    8   to the left of    2
19    8   to the left of   13
20    8   to the left of    5
21    8   to the left of    4
22    9   to the left of   13
23    9   to the left of    2
24   10  to the right of    7
25   12  to the right of   13
26   12  to the right of    2
27   13  to the right of    8
28   13   to the left of   14
29   13  to the right of    9
30   13   to the left of   12
31   13  to the right of    5
32   13   to the left of    3
33   14  to the right of   13
34   14  to the right of    4
35   14               on    1
36   14  to the right of    5
37   17  to the right of    0