What animals are right of the person?
The animals are horses.
    src        edge_attr  dst
0     0   to the left of    8
1     1   to the left of    4
2     1  to the right of    9
3     2   to the left of    4
4     2   to the left of    3
5     3  to the right of    8
6     3  to the right of    2
7     4  to the right of   10
8     4  to the right of    7
9     4  to the right of    2
10    4  to the right of    1
11    5  to the right of   10
12    7  to the right of    9
13    7   to the left of    4
14    7  to the right of   11
15    8   to the left of    3
16    8  to the right of    0
17    9   to the left of    1
18    9   to the left of    7
19    9   to the left of   10
20   10   to the left of    4
21   10   to the left of    5
22   10  to the right of    9
23   10  to the right of   11
24   11   to the left of    7
25   11   to the left of   10