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