Which kind of animal is in the field?
The animals are zebras.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    8
2     1  to the right of    4
3     3   to the left of    6
4     3   to the left of   13
5     3  to the right of    4
6     3  to the right of    8
7     3   to the left of    5
8     3               on   12
9     4   to the left of    1
10    4   to the left of    0
11    4  to the right of   14
12    4   to the left of    3
13    5               in   12
14    5  to the right of    3
15    6  to the right of    3
16    6  to the right of   13
17    6   to the left of    7
18    6   to the left of    9
19    7  to the right of    6
20    7  to the right of   13
21    7  to the right of    9
22    8               in   12
23    8   to the left of    3
24    8   to the left of    0
25    9  to the right of    6
26    9  to the right of   13
27    9   to the left of    7
28   10            under   11
29   11               in   12
30   11            above   10
31   13  to the right of    3
32   13   to the left of    6
33   13   to the left of    7
34   13   to the left of    9
35   14   to the left of    4