What is on the tray?
The bag is on the tray.
    src        edge_attr  dst
0     0               on    8
1     0  to the right of    5
2     0  to the right of    6
3     1  to the right of    6
4     1               on    0
5     1  to the right of    5
6     2   to the left of    9
7     2   to the left of    7
8     2   to the left of    3
9     3  to the right of    2
10    3  to the right of   10
11    4            below    8
12    4            under    8
13    5   to the left of    1
14    5               on    6
15    5   to the left of    0
16    6               on    8
17    6   to the left of    1
18    6   to the left of    0
19    7      in front of    8
20    7  to the right of   10
21    7  to the right of    2
22    8            above    4
23    8           behind    7
24    9  to the right of   10
25    9  to the right of    2
26   10   to the left of    9
27   10   to the left of    3
28   10   to the left of    7