What material is the light floor made of?
The floor is made of wood.
    src        edge_attr  dst
0     0            above    1
1     1            under    0
2     3  to the right of    4
3     4   to the left of    5
4     4   to the left of    3
5     4  to the right of   11
6     4               on    7
7     4   to the left of   13
8     4   to the left of   10
9     5   to the left of   10
10    5  to the right of    4
11    6  to the right of    8
12    7  to the right of   11
13    8  to the right of   12
14    8   to the left of    6
15   10  to the right of    5
16   10  to the right of    4
17   10               on   11
18   11   to the left of    4
19   11   to the left of    7
20   12   to the left of    8
21   13  to the right of    4