Is there any zebra or horse that is not white?
No, there is a zebra but it is white.
    src        edge_attr  dst
0     0               of    2
1     0   to the left of    6
2     1               of    2
3     1   to the left of    6
4     2           behind    5
5     2            above   14
6     2               on   14
7     2  to the right of    5
8     3  to the right of   11
9     3        on top of    7
10    3   to the left of   12
11    3        on top of    8
12    4   to the left of   19
13    4  to the right of   15
14    4   to the left of   18
15    4  to the right of   16
16    5   to the left of   15
17    5      in front of    2
18    5   to the left of    2
19    5   to the left of   16
20    6  to the right of    0
21    6  to the right of    1
22    6  to the right of   17
23    7   to the left of   12
24    7  to the right of   11
25    7  to the right of    8
26    8   to the left of    7
27    8  to the right of   11
28    9               of    2
29   10               of    2
30   11   to the left of    3
31   11   to the left of    7
32   11   to the left of    8
33   12   to the left of   13
34   12  to the right of    7
35   12  to the right of    3
36   13  to the right of   12
37   14            under    2
38   15               of    2
39   15   to the left of   18
40   15  to the right of    5
41   15   to the left of    4
42   16               of    2
43   16   to the left of   18
44   16  to the right of    5
45   16   to the left of    4
46   16   to the left of   19
47   17   to the left of    6
48   17               of    2
49   18  to the right of    4
50   18               of    2
51   18   to the left of   19
52   18  to the right of   15
53   18  to the right of   16
54   19  to the right of   16
55   19  to the right of   18
56   19  to the right of    4
57   19               of    2