Does the horse in front of the tree have small size and brown color?
No, the horse is brown but large.
    src        edge_attr  dst
0     1           behind   13
1     1        pulled by   13
2     1   to the left of   11
3     1   to the left of    4
4     1   to the left of    9
5     4  to the right of   13
6     4  to the right of    1
7     4               on    3
8     4  to the right of    9
9     5  to the right of    9
10    5  to the right of    6
11    6   to the left of    9
12    6           behind   13
13    6   to the left of    5
14    7           behind   13
15    8   to the left of   10
16    8               by   13
17    9  to the right of    6
18    9  to the right of    1
19    9   to the left of    4
20    9   to the left of    5
21    9  to the right of   13
22   10  to the right of    8
23   11           behind   13
24   11  to the right of    1
25   11               on    3
26   11  to the right of   13
27   12   to the left of   13
28   13      in front of    6
29   13      in front of   11
30   13      in front of    1
31   13   to the left of    4
32   13   to the left of    9
33   13   to the left of   11
34   13  to the right of   12
35   13      in front of    7
36   13          pulling    1