Which kind of furniture is made of wood?
The furniture is a coffee table.
    src        edge_attr  dst
0     1   to the left of   10
1     2  to the right of   10
2     2  to the right of   11
3     2               on    0
4     3  to the right of    6
5     3  to the right of    9
6     4  to the right of    9
7     5               on    0
8     5             with   10
9     5  to the right of   12
10    6   to the left of   13
11    6   to the left of    3
12    8   to the left of    9
13    8   to the left of   11
14    9   to the left of   13
15    9   to the left of    3
16    9  to the right of    8
17    9   to the left of    4
18   10  to the right of    1
19   10  to the right of   12
20   10   to the left of    2
21   11   to the left of    2
22   11  to the right of    8
23   12   to the left of   10
24   12   to the left of    5
25   13  to the right of    6
26   13  to the right of    9