What is the door made of?
The door is made of wood.
    src        edge_attr  dst
0     0  to the right of    3
1     2  to the right of   14
2     3   to the left of   13
3     3   to the left of    8
4     3   to the left of   14
5     3   to the left of    9
6     3   to the left of   10
7     3   to the left of    0
8     3   to the left of    7
9     3   to the left of    4
10    4  to the right of    3
11    4  to the right of   14
12    5  to the right of   12
13    5  to the right of   11
14    6  to the right of   14
15    7  to the right of    3
16    8  to the right of    3
17    9  to the right of    3
18   10  to the right of    3
19   11  to the right of   12
20   11   to the left of    5
21   12   to the left of   11
22   12   to the left of    5
23   13               on    9
24   13  to the right of    3
25   14  to the right of    3
26   14   to the left of    4
27   14   to the left of    2
28   14   to the left of    6