The zebra in the middle is of what color?
The zebra is white.
    src        edge_attr  dst
0     0  to the right of    8
1     0  to the right of   11
2     1   to the left of   10
3     1   to the left of    8
4     3  to the right of   11
5     3  to the right of    8
6     4   to the left of    8
7     4   to the left of   10
8     6  to the right of    8
9     6  to the right of    9
10    6  to the right of   11
11    8  to the right of   10
12    8   to the left of    0
13    8  to the right of    1
14    8  to the right of    4
15    8   to the left of    3
16    8   to the left of    9
17    8   to the left of    6
18    9  to the right of    8
19    9   to the left of    6
20    9  to the right of   11
21   10  to the right of    4
22   10   to the left of    8
23   10   to the left of   11
24   10  to the right of    1
25   11   to the left of    6
26   11   to the left of    3
27   11   to the left of    0
28   11  to the right of   10
29   11   to the left of    9