What is the brown bag made of?
The bag is made of leather.
    src        edge_attr  dst
0     0   to the left of    4
1     1   to the left of    7
2     1   to the left of    4
3     1   to the left of   12
4     1   to the left of    9
5     1   to the left of    3
6     1   to the left of    5
7     2   to the left of   12
8     2   to the left of    4
9     3   to the left of    7
10    3  to the right of    1
11    3   to the left of    5
12    3  to the right of   11
13    4  to the right of    2
14    4  to the right of    8
15    4  to the right of    0
16    4  to the right of   13
17    4  to the right of    1
18    5  to the right of   12
19    5  to the right of   11
20    5  to the right of    9
21    5   to the left of    7
22    5  to the right of    1
23    5  to the right of    3
24    6  to the right of   11
25    7  to the right of    3
26    7  to the right of    1
27    7  to the right of    5
28    7  to the right of   12
29    7  to the right of    9
30    8   to the left of    4
31    9  to the right of   11
32    9   to the left of    5
33    9  to the right of    1
34    9   to the left of    7
35   11   to the left of    5
36   11   to the left of    6
37   11   to the left of    3
38   11   to the left of   12
39   11   to the left of    9
40   12  to the right of   11
41   12  to the right of    2
42   12  to the right of    1
43   12   to the left of    5
44   12   to the left of    7
45   13   to the left of    4