Are there metallic benches in the image?
Yes, there is a metal bench.
    src        edge_attr  dst
0     1  to the right of    8
1     3   to the left of   10
2     3  to the right of   12
3     3   to the left of    4
4     3   to the left of    8
5     4   to the left of    8
6     4  to the right of   13
7     4  to the right of    3
8     4  to the right of   10
9     5               by   11
10    5   to the left of    6
11    6  to the right of    5
12    8  to the right of    4
13    8  to the right of    3
14    8   to the left of    1
15    8  to the right of   10
16   10  to the right of   12
17   10   to the left of    4
18   10   to the left of    8
19   10  to the right of   13
20   10  to the right of    3
21   12   to the left of    3
22   12   to the left of   10
23   12   to the left of   13
24   13  to the right of   12
25   13   to the left of   10
26   13   to the left of    4