What is the animal that is in the water the fence is around of?
The animal is a swan.
    src        edge_attr  dst
0     0      in front of    2
1     1   to the left of    5
2     2   to the left of    6
3     2   to the left of   13
4     2           behind    0
5     2   to the left of    9
6     3               in   13
7     3  to the right of   13
8     4               in   16
9     4   to the left of   15
10    5  to the right of    1
11    6  to the right of    2
12    6           behind   16
13    7   to the left of   15
14    8               on   10
15    9           behind   16
16    9  to the right of    2
17    9  to the right of   14
18   10   to the left of   15
19   12               in   16
20   12   to the left of   16
21   13   to the left of    3
22   13  to the right of    2
23   14   to the left of    9
24   15  to the right of   10
25   15           around   16
26   15  to the right of    4
27   15  to the right of    7
28   16  to the right of   12
29   16      in front of    9
30   16      in front of    6