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