What is the bench made of?
The bench is made of wood.
    src        edge_attr  dst
0     0   to the left of   17
1     1  to the right of    5
2     2   to the left of   13
3     5   to the left of    1
4     5   to the left of   15
5     6               of   11
6     7           behind   11
7     8               of   10
8     8   to the left of   13
9     9            under   10
10   10               on    4
11   10            above    9
12   11          wearing    6
13   11          wearing    1
14   11             with    1
15   11      in front of    7
16   11          wearing    3
17   11               on   10
18   11   to the left of   13
19   13               on   10
20   13  to the right of   11
21   13  to the right of    8
22   13  to the right of    2
23   15  to the right of    5
24   17  to the right of    0