What is the animal that is black?
The animal is a sheep.
    src        edge_attr  dst
0     0  to the right of    6
1     1  to the right of   14
2     1  to the right of    9
3     1  to the right of    5
4     2   to the left of    3
5     2   to the left of   15
6     2   to the left of   18
7     3  to the right of    2
8     5   to the left of    1
9     5   to the left of   10
10    6   to the left of    0
11    6   to the left of   13
12    6  to the right of   12
13    6  to the right of   17
14    8   to the left of   13
15    8   to the left of   11
16    9   to the left of    1
17    9   to the left of   10
18   10  to the right of    9
19   10  to the right of    5
20   10   to the left of   11
21   10   to the left of   13
22   11  to the right of   10
23   11  to the right of    8
24   12  to the right of   17
25   12   to the left of    6
26   13  to the right of   10
27   13  to the right of    8
28   13  to the right of    6
29   14   to the left of    1
30   14   to the left of   16
31   15               of   18
32   15  to the right of    2
33   16  to the right of   14
34   17   to the left of   12
35   17   to the left of    6
36   18               in    4
37   18  to the right of    2