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