What is the snowboard made of?
The snowboard is made of wood.
    src        edge_attr  dst
0     2   to the left of    7
1     3               on   16
2     6          wearing    4
3     6          wearing    2
4     6          wearing    1
5     6          wearing    8
6     7  to the right of   11
7     7  to the right of   10
8     7  to the right of   15
9     7  to the right of    8
10    7  to the right of    2
11    8               on   10
12    8   to the left of    7
13    9  to the right of   14
14    9  to the right of   13
15    9  to the right of   16
16    9  to the right of   12
17   10   to the left of    7
18   11   to the left of   13
19   11   to the left of    7
20   12   to the left of    9
21   13   to the left of   14
22   13  to the right of   11
23   13   to the left of    9
24   13  to the right of   15
25   14   to the left of    9
26   14  to the right of   13
27   14  to the right of   15
28   15   to the left of    7
29   15   to the left of   13
30   15   to the left of   14
31   16   to the left of    9