What is located on top of the plate?
The sandwiches are on top of the plate.
    src        edge_attr  dst
0     1  to the right of   10
1     1  to the right of    6
2     1  to the right of   15
3     1   to the left of    5
4     2   to the left of    5
5     2  to the right of   12
6     2  to the right of   13
7     2  to the right of    7
8     2   to the left of    9
9     5  to the right of    1
10    5  to the right of    8
11    5  to the right of    2
12    5  to the right of   10
13    5  to the right of   15
14    5  to the right of   14
15    6   to the left of    1
16    7   to the left of    2
17    7   to the left of    9
18    8   to the left of    5
19    8  to the right of   15
20    8  to the right of   10
21    9  to the right of   10
22    9  to the right of    7
23    9  to the right of   14
24    9  to the right of   13
25    9  to the right of    2
26   10   to the left of    9
27   10   to the left of    5
28   10   to the left of    8
29   10   to the left of    1
30   12   to the left of    2
31   13           inside    7
32   13   to the left of    9
33   13   to the left of    2
34   14        on top of   10
35   14   to the left of    5
36   14   to the left of    9
37   15   to the left of    5
38   15   to the left of    8
39   15           beside   14
40   15   to the left of    1