What type of furniture is made of wood, the shelf or the cabinet?
The cabinet is made of wood.
    src        edge_attr  dst
0     0   to the left of    6
1     2               on    7
2     2  to the right of    8
3     4  to the right of    7
4     4  to the right of   12
5     6  to the right of    0
6     6  to the right of    7
7     7   to the left of   11
8     7      in front of    8
9     7             near   12
10    7   to the left of   10
11    7   to the left of    6
12    7   to the left of    4
13    8   to the left of    2
14    8           behind    7
15   10       resting on    4
16   10  to the right of    7
17   10               on   11
18   10       resting on   11
19   11  to the right of    7
20   12             near    7
21   12   to the left of    4