What material is the baseball bat that looks silver and black?
The baseball bat is made of metal.
    src        edge_attr  dst
0     0  to the right of    4
1     1  to the right of   12
2     1  to the right of    4
3     3  to the right of    8
4     4   to the left of    0
5     4               of    5
6     4   to the left of    1
7     5          holding    6
8     5  to the right of   12
9     5          wearing    1
10    5          wearing    9
11    6   to the left of    9
12    7               on   13
13    8   to the left of    3
14    9  to the right of    6
15   10   to the left of   11
16   11  to the right of   10
17   12   to the left of    5
18   12   to the left of    1