What color is the ball to the left of the other ball?
The ball is black.
    src        edge_attr  dst
0     1  to the right of    2
1     2   to the left of    3
2     2   to the left of    1
3     2   to the left of    6
4     2   to the left of    5
5     3  to the right of   17
6     3  to the right of    2
7     4   to the left of    6
8     4   to the left of    5
9     4  to the right of   12
10    4   to the left of   11
11    5  to the right of    9
12    5  to the right of    2
13    5  to the right of   17
14    5  to the right of    4
15    6  to the right of    9
16    6  to the right of    2
17    6  to the right of   17
18    6  to the right of    4
19    9          holding   10
20    9   to the left of    6
21    9   to the left of   11
22    9   to the left of    5
23   10   to the left of   11
24   11  to the right of   17
25   11  to the right of   12
26   11  to the right of    9
27   11  to the right of    4
28   11  to the right of   10
29   12   to the left of    4
30   12   to the left of   11
31   13   to the left of   15
32   13   to the left of   14
33   14  to the right of   13
34   15  to the right of   13
35   17   to the left of    6
36   17   to the left of    5
37   17   to the left of    3
38   17   to the left of   18
39   17   to the left of   11
40   18  to the right of   17