Which kind of material is used to make the bucket?
The bucket is made of plastic.
    src        edge_attr  dst
0     0  to the right of    9
1     0           behind    3
2     0  to the right of   13
3     0   to the left of   11
4     3  to the right of   13
5     3      in front of    0
6     3            using   12
7     4   to the left of   14
8     4   to the left of   10
9     4   to the left of    7
10    4   to the left of   12
11    6   to the left of    7
12    7  to the right of    4
13    7  to the right of    6
14    7  to the right of    8
15    7  to the right of   13
16    8   to the left of    7
17    8   to the left of   14
18    9   to the left of    0
19   10  to the right of    4
20   11  to the right of    0
21   12  to the right of    4
22   13   to the left of    7
23   13   to the left of    3
24   13   to the left of    0
25   14  to the right of    8
26   14  to the right of    4