What animal is on the field?
The zebra is on the field.
    src        edge_attr  dst
0     0               of    4
1     0  to the right of    5
2     0  to the right of    1
3     1               of    4
4     1   to the left of    0
5     2               of    4
6     3               of    4
7     4           behind    9
8     4             near    9
9     4      in front of    8
10    4               on   10
11    4               in   10
12    5               of    4
13    5   to the left of    0
14    7               of    4
15    8           behind    4
16    9      in front of    4
17    9             near    4
18   10             with    4