Which kind of material makes up the door?
The door is made of wood.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of    4
2     1  to the right of    9
3     1  to the right of    7
4     1  to the right of    4
5     2   to the left of    6
6     2   to the left of    9
7     3   to the left of    4
8     3   to the left of   14
9     4  to the right of    7
10    4   to the left of    1
11    4   to the left of    6
12    4   to the left of    0
13    4  to the right of    3
14    5  to the right of   13
15    5   to the left of   10
16    6  to the right of    9
17    6               on   11
18    6  to the right of    2
19    6   to the left of    0
20    6  to the right of    4
21    6  to the right of    7
22    7   to the left of   10
23    7   to the left of    9
24    7   to the left of    1
25    7   to the left of    6
26    7   to the left of    4
27    7               on   11
28    7   to the left of   14
29    8               on    7
30    8   to the left of   14
31    9               on   11
32    9   to the left of    6
33    9  to the right of    7
34    9   to the left of    1
35    9  to the right of    2
36    9  to the right of   12
37   10  to the right of    5
38   10  to the right of    7
39   10  to the right of   14
40   12   to the left of    9
41   12               on    7
42   13   to the left of    5
43   13   to the left of   14
44   13               on   14
45   14  to the right of    3
46   14   to the left of   10
47   14  to the right of    8
48   14  to the right of    7
49   14  to the right of   13