What does the bird sit on top of?
The bird sits on top of the rock.
    src          edge_attr  dst
0     3    to the right of    8
1     3     to the left of   12
2     3     to the left of    9
3     4    to the right of    5
4     5     to the left of    4
5     6    to the right of   13
6     6    to the right of   14
7     6     to the left of    7
8     7    to the right of    6
9     7         growing on    6
10    8    to the right of   14
11    8     to the left of    3
12    9    to the right of    3
13   10         sitting on    0
14   10                 on    0
15   10        standing on    0
16   10  sitting on top of    0
17   12    to the right of    3
18   13     to the left of    6
19   14     to the left of    6
20   14     to the left of    8
21   14             beside    6
22   14         growing on    6