What is the horse doing?
The horse is walking.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of    3
2     1           riding    3
3     1          wearing    7
4     1               on    3
5     1       sitting on    2
6     1  to the right of    9
7     1  to the right of    8
8     1  to the right of    0
9     1   to the left of   12
10    1   to the left of    6
11    1  to the right of    4
12    2   to the left of    6
13    2   to the left of   12
14    3               in    5
15    3   to the left of   12
16    3       walking in    5
17    3  to the right of    0
18    3               on    5
19    3   to the left of    6
20    3  to the right of    4
21    3  to the right of    9
22    3  to the right of    8
23    4          wearing    0
24    4          wearing    8
25    4   to the left of    1
26    4   to the left of    3
27    4       sitting in    2
28    6       leaning on   12
29    6  to the right of    1
30    6  to the right of    2
31    6  to the right of    3
32    7  to the right of   10
33    8   to the left of    1
34    8  to the right of    9
35    8   to the left of    3
36    9   to the left of    3
37    9   to the left of    1
38    9   to the left of    8
39   10   to the left of    7
40   12  to the right of    3
41   12  to the right of    2
42   12  to the right of    1