What is the color of the ball in the middle?
The ball is blue.
    src        edge_attr  dst
0     0  to the right of    9
1     0  to the right of    3
2     0  to the right of   10
3     1  to the right of    8
4     1  to the right of    2
5     2   to the left of    1
6     2  to the right of   10
7     3   to the left of    0
8     3   to the left of    8
9     4          wearing    5
10    4  to the right of    7
11    5  to the right of    7
12    7   to the left of    4
13    7   to the left of    5
14    8      standing on   12
15    8   to the left of    1
16    8  to the right of    9
17    8          wearing    2
18    8   to the left of   11
19    8  to the right of   10
20    8  to the right of    3
21    9   to the left of    8
22    9   to the left of    0
23   10   to the left of    0
24   10   to the left of    2
25   10   to the left of    8
26   11      standing on   12
27   11  to the right of    8