What material is the container made of?
The container is made of metal.
    src        edge_attr  dst
0     0        on top of    3
1     0   to the left of    8
2     0   to the left of    2
3     0        on top of    5
4     1        on top of    5
5     1  to the right of    3
6     2           inside    1
7     2      in front of    8
8     2  to the right of    3
9     2  to the right of    0
10    3             with    0
11    3   to the left of    1
12    3   to the left of    2
13    3   to the left of    8
14    4        on top of    0
15    4  to the right of    7
16    4  to the right of   10
17    4   to the left of    8
18    6   to the left of    9
19    7   to the left of    4
20    8           behind    2
21    8        on top of    5
22    8  to the right of    0
23    8  to the right of    4
24    8  to the right of    3
25    9  to the right of    6
26   10   to the left of    4