What is the green bird standing on?
The bird is standing on the rock.
    src        edge_attr  dst
0     0   to the left of   21
1     0   to the left of   17
2     1   to the left of   21
3     1  to the right of    8
4     1  to the right of    4
5     1   to the left of   16
6     2  to the right of   12
7     3  to the right of    9
8     4   to the left of    5
9     4   to the left of   21
10    4   to the left of    1
11    4   to the left of   16
12    5  to the right of   16
13    5  to the right of    9
14    5  to the right of    4
15    8   to the left of    1
16    8   to the left of   16
17    9   to the left of   17
18    9   to the left of    3
19    9   to the left of    5
20    9   to the left of   21
21   10               on   11
22   10       sitting on   11
23   10      standing on   22
24   11   to the left of   25
25   12   to the left of    2
26   14  to the right of   24
27   14  to the right of   23
28   16  to the right of    4
29   16  to the right of    1
30   16  to the right of    8
31   16   to the left of    5
32   16   to the left of   21
33   17  to the right of    9
34   17   to the left of   21
35   17  to the right of    0
36   18   to the left of   23
37   21  to the right of    4
38   21  to the right of    9
39   21  to the right of   16
40   21  to the right of   17
41   21  to the right of    1
42   21  to the right of    0
43   23  to the right of   18
44   23  to the right of   24
45   23   to the left of   14
46   24   to the left of   14
47   24   to the left of   23
48   25  to the right of   11