Are there either any benches or trash cans that are made of metal?
Yes, the bench is made of metal.
    src        edge_attr  dst
0     0   to the left of   22
1     1   to the left of    5
2     1   to the left of    2
3     2  to the right of    4
4     2  to the right of    1
5     2   to the left of    5
6     3  to the right of   21
7     3  to the right of   20
8     3  to the right of   19
9     3  to the right of   18
10    4   to the left of    2
11    4               on   10
12    5  to the right of   23
13    5  to the right of    2
14    5  to the right of    1
15    5  to the right of   15
16    6               on    8
17    6   to the left of    7
18    6  to the right of   22
19    7  to the right of    6
20    7  to the right of   22
21    8  to the right of   22
22    9   to the left of   18
23   15   to the left of    5
24   16   to the left of   22
25   18   to the left of    3
26   18  to the right of    9
27   18   to the left of   21
28   18   to the left of   19
29   18   to the left of   20
30   19  to the right of   18
31   19   to the left of   21
32   19   to the left of    3
33   19   to the left of   20
34   20  to the right of   19
35   20  to the right of   18
36   20  to the right of   21
37   20   to the left of    3
38   21  to the right of   18
39   21   to the left of    3
40   21  to the right of   19
41   21   to the left of   20
42   22   to the left of    7
43   22   to the left of    8
44   22  to the right of   16
45   22  to the right of    0
46   22   to the left of    6
47   23   to the left of    5