Are there either bowls or fences that are made of metal?
Yes, the fence is made of metal.
    src        edge_attr  dst
0     0   to the left of    3
1     0  to the right of   10
2     1  to the right of    9
3     2   to the left of   11
4     3  to the right of    0
5     3   to the left of    5
6     3   to the left of   15
7     4   to the left of    6
8     4  to the right of   10
9     5  to the right of    3
10    6  to the right of    4
11    6  to the right of   14
12    7  to the right of   12
13    9   to the left of    1
14    9   to the left of   11
15    9   to the left of   18
16   10          wearing    1
17   10   to the left of    0
18   10   to the left of    4
19   10   to the left of   14
20   11  to the right of    9
21   11  to the right of    2
22   12   to the left of    7
23   14   to the left of    6
24   14  to the right of   10
25   15  to the right of    3
26   18  to the right of    9