Are there either salt shakers or benches in the picture?
Yes, there is a bench.
    src        edge_attr  dst
0     0       sitting on    6
1     0  to the right of   12
2     0  to the right of   13
3     0  to the right of    2
4     0  to the right of    4
5     0          holding   14
6     1  to the right of    3
7     1  to the right of   14
8     2   to the left of    0
9     2   to the left of    3
10    3  to the right of   13
11    3   to the left of   14
12    3  to the right of    2
13    3   to the left of    1
14    3  to the right of    4
15    3  to the right of   12
16    4   to the left of    0
17    4   to the left of    3
18    5  to the right of   11
19    5               on    6
20    7     plugged into    4
21    7   to the left of    9
22    9  to the right of    7
23    9  to the right of   15
24   10               on    1
25   11     plugged into   13
26   11   to the left of    5
27   11   to the left of   14
28   12   to the left of    0
29   12   to the left of   15
30   12   to the left of    3
31   13   to the left of    3
32   13   to the left of    0
33   13   to the left of   15
34   14  to the right of   11
35   14  to the right of    3
36   14   to the left of    1
37   15  to the right of   13
38   15  to the right of   12
39   15   to the left of    9