Which kind of animal is in the water?
The animals are zebras.
    src        edge_attr  dst
0     0  to the right of   15
1     0  to the right of   16
2     0   to the left of   20
3     0   to the left of   19
4     2  to the right of   11
5     3  to the right of   20
6     3  to the right of   21
7     3  to the right of    9
8     3  to the right of   10
9     5           behind   22
10    7   to the left of   22
11    7   to the left of   16
12    9  to the right of   19
13    9   to the left of    3
14    9   to the left of   21
15    9  to the right of   22
16   10   to the left of    3
17   11   to the left of    2
18   12           around   20
19   15   to the left of    0
20   15   to the left of   22
21   15   to the left of   16
22   16   to the left of   22
23   16  to the right of   15
24   16  to the right of    7
25   16   to the left of    0
26   19  to the right of   22
27   19   to the left of   21
28   19   to the left of    9
29   19   to the left of   20
30   19  to the right of    0
31   20  to the right of    0
32   20  to the right of   22
33   20   to the left of   21
34   20  to the right of   19
35   20   to the left of    3
36   21         drinking   20
37   21   to the left of    3
38   21  to the right of   20
39   21  to the right of   19
40   21  to the right of    9
41   22  to the right of    7
42   22               in   20
43   22   to the left of   19
44   22      in front of    5
45   22   to the left of   20
46   22   to the left of    9
47   22  to the right of   16
48   22         drinking   20
49   22  to the right of   15