Is the black sack made of paper or plastic?
The sack is made of paper.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of    6
2     0   to the left of    4
3     1   to the left of   13
4     1   to the left of   12
5     2   to the left of    7
6     2   to the left of    8
7     2   to the left of    9
8     3  to the right of    5
9     3   to the left of    8
10    4  to the right of    0
11    4   to the left of    8
12    4   to the left of   11
13    5   to the left of    8
14    5   to the left of    3
15    5   to the left of   11
16    6   to the left of   11
17    6   to the left of    8
18    6  to the right of    0
19    7  to the right of   12
20    7  to the right of    2
21    7  to the right of   13
22    8  to the right of    2
23    8  to the right of    5
24    8  to the right of    4
25    8   to the left of    9
26    8  to the right of    6
27    8  to the right of   13
28    8  to the right of   14
29    8  to the right of    3
30    8  to the right of   15
31    9  to the right of    2
32    9  to the right of    8
33    9             near   11
34    9  to the right of   13
35    9  to the right of   12
36   11               on   13
37   11             near    9
38   11      standing on   13
39   11               in   10
40   11  to the right of    6
41   11  to the right of    5
42   11           inside   10
43   11  to the right of    4
44   11  to the right of    0
45   12               on   13
46   12      standing on   13
47   12           inside   10
48   12               in   10
49   12  to the right of    1
50   12   to the left of    9
51   12   to the left of    7
52   13   to the left of    7
53   13               in   10
54   13   to the left of    8
55   13  to the right of    1
56   13   to the left of    9
57   14   to the left of    8
58   15   to the left of    8