What's the door made of?
The door is made of metal.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    1
2     0  to the right of   12
3     0  to the right of   10
4     1   to the left of    0
5     1   to the left of    2
6     1   to the left of   14
7     1  to the right of    7
8     1   to the left of    6
9     1  to the right of    9
10    1  to the right of    8
11    2  to the right of    1
12    2  to the right of    4
13    2  to the right of   12
14    2  to the right of   10
15    4   to the left of    2
16    4   to the left of    0
17    4   to the left of   14
18    5  to the right of    6
19    5  to the right of   10
20    6  to the right of    1
21    6   to the left of    5
22    6  to the right of   10
23    7               on    9
24    7   to the left of    1
25    8   to the left of    1
26    8               on    9
27    9   to the left of    1
28   10   to the left of    6
29   10   to the left of    5
30   10   to the left of    2
31   10   to the left of    0
32   10   to the left of   14
33   12   to the left of    2
34   12   to the left of    0
35   14  to the right of   10
36   14  to the right of    4
37   14  to the right of    1