What kind of furniture is not wooden?
The furniture is a chair.
    src        edge_attr  dst
0     2   to the left of    5
1     5  to the right of    2
2     6   to the left of    9
3     6   to the left of    8
4     6  to the right of   10
5     8  to the right of   12
6     8  to the right of    6
7     9               on    8
8     9  to the right of   12
9     9  to the right of    6
10   10   to the left of   12
11   10   to the left of    6
12   12  to the right of   10
13   12   to the left of    9
14   12   to the left of    8