What animal does the man to the right of the person ride on?
The man rides on a horse.
    src        edge_attr  dst
0     0           behind    5
1     0           behind   10
2     1           riding    2
3     1        riding on    2
4     1   to the left of   15
5     1  to the right of   13
6     1               on    2
7     1  to the right of    5
8     1  to the right of    4
9     1   to the left of   12
10    1  to the right of   11
11    2  to the right of    4
12    2  to the right of   11
13    2  to the right of    5
14    3  to the right of   10
15    4   to the left of    2
16    4   to the left of    1
17    4  to the right of    7
18    4  to the right of    5
19    4   to the left of   11
20    5      in front of    0
21    5  to the right of    7
22    5   to the left of   11
23    5   to the left of    1
24    5   to the left of    4
25    5   to the left of    2
26    7      standing by    0
27    7   to the left of    4
28    7   to the left of    5
29    7   on the side of    0
30   10   to the left of    3
31   10        on top of    0
32   10      in front of    0
33   11   to the left of    1
34   11  to the right of    4
35   11   to the left of    2
36   11  to the right of    5
37   12  to the right of    1
38   13          driving    5
39   13   to the left of    1
40   15  to the right of    1