Are there both nests and benches in this picture?
No, there is a bench but no nests.
    src        edge_attr  dst
0     0   to the left of    2
1     0   to the left of    9
2     0   to the left of   10
3     2           behind   16
4     2  to the right of   10
5     2  to the right of    9
6     2  to the right of    8
7     2  to the right of    0
8     2  to the right of    4
9     3   to the left of   15
10    3               in    7
11    3   to the left of   19
12    3  to the right of    6
13    3  to the right of   11
14    4               on    2
15    4               on    3
16    4   to the left of    2
17    4   to the left of   19
18    4  to the right of   11
19    4   to the left of   14
20    4   to the left of   15
21    6   to the left of    3
22    8               of   12
23    8   to the left of    2
24    8   to the left of   18
25    9   to the left of    2
26    9  to the right of   11
27    9  to the right of    0
28    9   to the left of   14
29   10   to the left of   14
30   10  to the right of   11
31   10   to the left of    2
32   10  to the right of    0
33   11   to the left of   20
34   11   to the left of   10
35   11   to the left of    9
36   11   to the left of    4
37   11   to the left of    3
38   14  to the right of   10
39   14  to the right of    4
40   14               of    2
41   14  to the right of    9
42   15  to the right of    3
43   15  to the right of    4
44   15               of    2
45   18  to the right of    8
46   19  to the right of    3
47   19  to the right of    4
48   20  to the right of   11