What is in the small plate?
The nut is in the plate.
    src        edge_attr  dst
0     0  to the right of   11
1     0  to the right of   14
2     0        on top of   19
3     1   to the left of    9
4     1   to the left of    6
5     2        on top of    3
6     2   to the left of   13
7     2   to the left of    5
8     2   to the left of   14
9     4  to the right of   12
10    5   to the left of   17
11    5   to the left of    7
12    5  to the right of    2
13    6  to the right of    1
14    6               in   18
15    6        on top of   18
16    7  to the right of    5
17    7  to the right of   13
18    7        on top of   17
19    8   to the left of   18
20    9               on   18
21    9  to the right of    1
22   11  to the right of   20
23   11   to the left of    0
24   11   to the left of   19
25   12   to the left of    4
26   13  to the right of    2
27   13   to the left of   17
28   13   to the left of    7
29   13      in front of   20
30   14               in   13
31   14        on top of   13
32   14  to the right of    2
33   14   to the left of   19
34   14   to the left of    0
35   15               in    1
36   15               on   15
37   16        on top of    3
38   17  to the right of    5
39   17  to the right of   13
40   18  to the right of    8
41   19  to the right of   11
42   19  to the right of   14
43   20           behind   13
44   20   to the left of   11